Now You Know Comprehensive Viva Questions for Textile Engineering

Comprehensive viva is the last exam for textile engineering course both for bachelor or diploma. Whereas it is the last exam or interview so any type of question has to face for textile engineering students. As a result every student should has clear concept (basic concept) about all the sector of textile. Besides to get job in textile and garment sector every textile engineer has to face to an interview. In this article I have collected all possible short questions of whole textile engineering syllabus. If any textile student or textile job seeker solves all questions then I can guaranty he don’t disqualify from his goal.

Viva Questions for POLYMER SCIENCE

Difference between isotactic, syndiotactic and atactic polymers?
Differentiate between anionic and cationic polymerization
What are blocked polymers?
What are free radicals? How it can be produced?
What are graft polymers?
What are monomers and polymers?
What are star polymers?
What are the advantages and disadvantages of solution polymerization?
What are the advantages of bulk polymerization?
What are the conditions of step polymerization?
What are the factors affects crystallinity in a polymer?
What are the ingredients used in an emulsion polymerization/
What are the inter-molecular forces in a polymer?
What are the methods or techniques of polymerization?
What are the methods used to calculate Mn and Mw?
What are the relations between Tg and Tm?
What are the steps of polymerization?
What do you mean by crystallinity and amorphousness in a polymer?
What do you mean by mono disperse and poly disperse system?
What is AA-BB type polymerization?
What is amorphousness of polymer?
What is branched polymer?
What is chain polymerization?
What is chain transfer reaction?
What is combed polymer?
What is co-polymer?
What is crystallinity of polymer?
What is CTA?
What is dendrimer?
What is end group analysis?
What is free radical polymerization?
What is gas phase polymerization?
What is index of crystallinity?
What is index of polydispersity?
What is interfacial poly condensation?
What is liquid phase polymerization?
What is living polymer?
What is molecular weight distribution curve?
What is monomer residue?
What is polymerization and how it can be classified?
What is repeat unit of a polymer chain?
What is self-condensation?
What is step or condensation polymerization?
What is Tf?
What is Tg and Tm?
What is Tg of rubber, nylon and polyester?
What is the basic principle of interfacial poly condensation?
What is the difference between homo polymer and co polymer?
What is the difference between thermoplastic and thermosetting polymer?
What is the mechanism of free radical polymerization?
What is Z average molecular weight of polymer?
Why is osmometry?
What are anti oxidants?
What are the factors required for a polymer to form a fiber?
How is polymer characterized?
What are the types of polymer degradation?

57. What is?

H-bonding
Salt linkage
Ionic bond
Van deer wale forces
Hydrophobic interaction
NMR
SEM
AFM
Polymer degradation

58. What is?

Chain end degradation
Random degradation
Thermal degradation
Mechanical degradation
Oxidative degradation
Hydrolytic degradation

Viva Questions for TEXTILE RAW MATERIALS (PART – I)

Classify the cotton fiber on the basis of staple length
Classify the textile fiber in broad sense
Give some examples of seed fiber, leaf fiber, regenerated fiber and synthetic fiber
How can you express the fineness of silk filament?
Mention some grading systems of raw cotton fiber
Mention some important/ major cotton cultivated countries
Mention the average length and strength of silk filament
Mention the average length of jute fiber
Mention the average strength and MR% of cotton fiber
Mention the average strength and MR% of jute fiber
Mention the average strength of wool fiber
Mention the main elements and their amount jute fiber
Mention the major silk producing country
Mention the major wool producing countries
Mention the natural filament
Mention the range of length, diameter and spinning limit of cotton fiber
Mention the strength and MR% of flax fiber
What are cotton linters and uses of linters?
What are the effects of acids and alkali on flax fiber?
What are the effects of acids and alkali on wool fiber?
What are the main elements of cotton fiber?
What are the main elements of flax fiber?
What are the main elements of wool fiber?
What are the uses of jute fiber?
What are the uses of Ramie, Hemp, kemi and sisal?
What do you know about Bangladeshi cotton?
What is fiber?
What is filament?
What is ginning and it’s type?
What is retting?
What is textile fiber?
What is the effect of acids and alkali on cotton fiber?
What is the effect of acids and alkali on jute fiber?
What is the effect of acids and alkali on silk?
What is the end use of flax fiber?
What is the end use of silk?
What is the end use of wool fiber?
What is upland and American pima cotton?
What types of defects are found in jute fiber?
What types of dyes are used for cotton, jute and flax fiber?
What types of dyes are used for silk dyeing?
What types of dyes are used for wool dyeing?
What types of faults are found in raw cotton?
What types of impurities of are found in raw cotton?
What types of reagents are used for chemical retting?

Viva Questions for TEXTILE RAW MATERIALS (PART-II)

Classify different viscose fibers
Difference between acetate and di-acetate fiber
Difference between Dacron and Terylene?
How are the chemical properties of viscose rayon?
How are the physical and chemical properties of acetate and diacetate fibers?
How are the physical and chemical properties of acrylic fiber?
How are the physical and chemical properties of nylon fibers?
How are the physical and chemical properties of polyester?
How are the physical and chemical properties of polyurethane fiber?
How are the physical properties of viscose rayon?
How chemical fibers are classified?
How do heat and organic solvent affect nylon fibre?
How do organic solvent and heat affect polyurethane fiber?
How is acetate fiber affected by moisture?
How is acrylic fiber affected by temperature?
How is bi-component prepared?
How is polyamide fiber classified?
How is polyester affected by temperature and sunlight?
How is viscose rayon affected by water, sunlight?
Mention chemistry involved in production of acetate and diacetate fibers
Mention chemistry involved in production of viscose rayon?
What are aramids fibers?
What are chemical fibers?
What are natural polymers based chemical fibers?
What are polyamide fibers?
What are PVC, Vinyon, Dynel, PVA & Carbon fiber?
What are the applications of polyamide fibers?
What are the available methods for texturing?
What are the coagulants used in wet spinning?
What are the functions of spin finishes in production chemical fibers?
What are the ingredients used in preparation E glass?
What are the methods available for spinning polyester fibers?
What are the methods for spinning polyurethane fiber?
What are the objectives of preparation bi-component fiber?
What are the objectives of texturing?
What are the solvents generally used in dry spinning?
What are the spinning methods of chemical fibers?
What are the spinning methods of glass fiber?
What are the tests for ripening viscose? How it can be classified?
What are the uses of acrylic fibers?
What are the uses of bi-component fiber?
What are the uses of diacetate fibers?
What are the uses of glass fiber?
What are the uses of polyester?
What are the uses of polyurethane fiber?
What are the uses of viscose rayon?
What ingredients are used in spinning bath of viscose rayon production?
What is acetate and acetate fiber?
What is acrylic and mod-acrylic fiber?
What is bi-component fiber?
What is drawing and stretching of chemical fibers?
What is dry spinning?
What is E glass and C glass?
What is false twist method for texturing?
What is glass fiber?
What is HWM viscose rayon?
What is Kodel 200?
What is Melt spinning?
What is Nylon 6,6 and Nylon 6?
What is plastisizer and why it is used in spinning chemical fibers?
What is polynosic?
What is polyurethane fiber?
What is pulp and how it is prepared?
What is regenerated fiber?
What is spin finishes?
What is spinneret? Why it is used?
What is suitable spinning method for acrylic fiber and why?
What is texturing?
What is the difference between cold draw and hot draw?
What is the polyester fiber according to FTC?
What is Tory?
What is Wet spinning?
What raw materials are available for viscose rayon production?
What type of spinning is suitable for viscose rayon?

Viva Questions for YARN MANUFACTURING TECHNOLOGY

Define batching and Emulsion
Define different count fiber?
How cotton is graded?
How draft is calculated from gearing diagram?
How production of carding and draw frame can be increased?
Mention some setting point of carding
Tell about lap hank and sliver hank
What are the typical production of card and draw frame?
What fiber properties are considered for spinning?
What is auto leveler, open and close loop control?
What is chute feed system?
What is cleaning efficiency?
What is dollop weight, ultimate?
What is meant by DCP?
What is tension draft?
What is Tex? Kilotex? Worsted count?
What is the draft of breaker card?
What is the function of barrow wheel?
What is the production of jute breaker card?
What is the usual draft and doubling of cotton draw frame?
What is typical micronaire value of cotton fiber?
Give some example of Bast fiber and leaf fiber, mineral fiber & hairy fiber
Impact of immature fiber in spinning and dyeing
How do you express the strength of fiber and give its units
Variety of cotton
Name some cotton producing countries
Difference between carded and combed process
Differentiate between mixing and blending
What is SCI?
What is BIAS, HVI & AFIS?
Necessity of carding in yarn manufacturing process
What is pneumophil?
Principle of tender carding, roller carding & stationary fold carding
In revolving flat card where main carding action takes places?
Which metal is used for carding?
Selection of carding angle for different machine parts
How fiber damage in card?
Causes of nep formation in card
Different types of hook formation in carding
Production calculation of a carding m/c
Explain ‘Drafting causes irregularities whereas doubling minimizes irregularities’.
Basic composition of jute
Composition of Hessian and sacking
Difference between Batch and batching
Different forms of Drafting and their suitability
Different jute grade
Explain: nip point, roller setting and drafting zone
Function of auto leveler in Draw frame
Function of tin cylinder, worker and striker
How does short fiber is controlled in Draw frame?
Ingredient of emulsion and their function
Jute card pinning
Oil distribution in jute emulsion
Problem associated with lignin
Types of jute yarn
What are staves?
What are the defects of emulsion?
What are the drafting forces?
What is periodic variation and Drafting wave?
Briefly mention silk spinning process
Define terms OPS, Millitex, spinning strangle
Define terms Texturing, False twist and two for one twister
Discuss on auto leveler and controller hardness
Discussion on Uster Statistics
Explain “Twist cost money ”
How noil% can be adjusted?
How production of comber can be calculated?
How production of ring frame can be calculated?
How will you analyze spectrogram?
Mention change wheel of simplex
Mention draft of each machine
Mention flow chart from fiber to dyed fabric
Mention parameter (twist, count etc ) of yarn manufacturing
Mention production of each machine
Mention properties of different fibers
Mention typical draft of ring and simplex
Mention waste% of different stage of cotton processing
Mention waste% of each machine
Prepare a table for spin plan of cotton and jute
Production of different processing machine
Tell example production of comber, simplex & ring frame
What are the common change wheels of Ring frame?
What do you mean by the term “slip draft”?
What do you understand by the color grade 21-2?
What is GSP?
What is hacking?
What is ISO certification?
What is lead?
What is meant by EXPERT SYSTEM?
What is MIS?
What is open loop and close loop control?
What is OPS and how it is calculated?
What is Q95%, VL curve?
What is quality ratio?
What is Ring data and Sliver data?
What is spacer?
What is statistical quality control?
What is the comber input lap hank?
What is the difference between bobbin building and cop building?
What is the function of building motion in simplex?
What is the function of Classimate, AFIS. HVI & Optical cleaner?
What is the function of gill pin in jute drawing?
What is the function of index wheel?
What is the function of TCP?
What is the nips/min and feed/nip of atypical comber?
What is the OPS of 20, 30, 40, 60 Ne yarn?
What is the principle of EYC?
What is the range of noil% removal?
What is the responsibility of a production officer?
What is the traveler no for 20, 30 & 6o Ne yarn?
What is the typical value of S, L, T setting?
What is the usual count of jute sliver and yarn?
What is TM?
What is traveler no?
What is twist angle and maximum value of it?
Where shell is used in jute processing?

117. Give the properties of cotton fiber

Specific gravity
Strength
Fineness
Staple length
MR%
Melting point
Elongation

118. Define:

Cotton count
Metric count
Tex
Denier
Worsted
Spyndle

119. Why called:

Card is the heart of spinning mill
Well carded is half spun

120. Define:

Break draft
Tension draft
Back zone draft
Front zone draft
Total draft

121. Explain:

Up striking
Down striking
Half circular
Full circular

Viva Questions for FABRIC MANUFACTURING TECHNOLOGY

Classify the sinker according to their functions
Explain drafting and denting
Explain the lapping diagram and chain notation
Give some example of parallel and near parallel wound package
How can we calculate the production in weight of a single jersey circular knitting m/c and which parameters are needed to calculate this production?
How can you increase the no. of cam system of circular knitting m/c?
How do the handlooms operate?
How winding is done?
Mention the main difference between precession and non precision winding
Mention the uses of sectional and high speed warping
Name different types of hand loom
Name different types of size ingredients
Name different types of winding packages
Name the auxiliary functions in winding
State the classification of a cam
State the classification of warp knitting m/c
State the features of a plain knitted structure
State the features of a rib knitted structure
State the importance of yarn friction in knitting
State the main features of a purl knitting m/c
What are the differences between bearded needle and latch needle according to the knitting action?
What are the differences between fabric length m/c and garment length m/c?
What are the differences between miss cam and float cam?
What are the differences between Tricot and Raschel warp knitting m/c?
What are the disadvantages of sizing?
What are the end uses of multi axial fabric?
What are the features of a rib knitted structure?
What are the knitting elements of a Tricot and Raschel warp knitting m/c?
What are the objects of winding?
What do you mean by automation of knitting industry?
What do you mean by beat up?
What do you mean by doffing?
What do you mean by efficiency?
What do you mean by Hessian and sacking?
What do you mean by non-woven fabrics?
What do you mean by raping?
What do you mean by sizing?
What do you mean by tertiary or auxiliary motion?
What is 4-truck circular knitting m/c?
What is basic rib structure?
What is cam?
What is circular and flat knitting?
What is compound needle?
What is creeling?
What is flat knitting m/c?
What is held loop, tuck loop on bearded needle?
What is interlock fabric?
What is jack?
What is knitting?
What is lapping movement of a guide bar?
What is multi axial fabric?
What is needle gaiting?
What is needle gauge?
What is needle loop and sinker loop?
What is needle timing?
What is non-woven fabric?
What is open top m/c?
What is piecing?
What is primary motion?
What is secondary motion?
What is shedding and picking?
What is side limb?
What is single jersey structure and double jersey structure?
What is sinker timing?
What is the difference between direct and indirect drive?
What is the difference between shuttle loom and shuttle less loom?
What is the effect of more size pick up?
What is the importance of immersion rollers and squeezing roller in sizing?
What is the importance of sizing?
What is the main difference between handloom and power loom?
What is the main difference between ordinary pirn & automatic pirn?
What is the main difference between over pick and under pick?
What is the main difference between power loom and modern loom?
What is the main difference between sectional warping and high speed warping?
What is the necessity of yarn guides and tensioners?
What is the use of double-headed latch needle?
What is tightness factor?
What is Wales and courses?
What is warp and weft knitting?
What is warp and weft?
What is weaving?
What is winding?
What problem will be seen if over drying in sizing process?
What types of faults are usually seen in sizing?
Where can we use the automatic shuttle and ordinary shuttle?
Which points we are considered to represent a circular knitting m/c specification?
Why 7 wheels and 5 wheels take up is used?
Why antiseptics and hygroscopic agents are used in sizing?
Why lower efficiency occurs in winding section?
Why lubricants or softener is used in sizing?
Why more crimp is used in weft yarn?
Why multi cylinder drying is most widely used?
Why sizing is done?
Why sizing of warp yarn is necessary?
Why sizing of weft yarn is not done?
Why spun yarn cannot be used directly in weaving section?
Why warping is done?
Why yarn clearer is used in winding?
Write the different names of the production system of non woven fabric
Write the different names of the production system of non woven fabric
Write the name of basic structure of weft knitting and warp knitting
Write the name of knitted fabric faults
Write the name of knitting elements?
Write the name of main/principle knitting elements
Write the name of the different parts of a knitting cam
Calculate the diameter of braid produced from 14 strands of 45 Tex
Classify the costs
Classify the jacquard loom
Classify the Textile Fabrics
Define and classify the toilet fabrics
Define braiding
Define Break Even Point and margin of safety
Define efficiency and over all efficiency
Define Geo-textiles
Define Laminate
Define lappet weaving
Define tape and webbing
Differ among SLSC, DLSC & DLDC jacquard
Differentiate between loose and fast reed motion
Differentiate between Swiss-Muslin and Anglo-Muslin fabric
Draw the different types of droppers
Find out the member of Neck cords, Hooks and Needles in a 400’s DLDC jacquard?
Give the classification of loom
Give the types of nets
Give the typical specifications of a belt
How can we increase efficiency?
How can we increase profit from cloth?
How can we produce different types of woven design?
How geo jute favors the growth of vegetation?
How labels are produced?
How many types of feeler?
How ways and why we can pattern in weft way?
How we can minimize cloth costing?
In which loom we get highest PPM and why?
List the advantages of loom winder
List the causes of warp breakage
Mention the growing areas of use of braid
Name the kind of yarns used for lace making. Also mention their properties
Name the technical difficulties in braid production
On which fact’s cloth costing are depend?
On which factors efficiency depends?
State the scope of jacquard shedding mechanism
What are different types of efficiency?
What are the aims and objectives of automatic weaving?
What are the causes and remedies of fabric faults?
What are the causes and remedies of warp and weft breakage?
What are the common features of Muslin fabric?
What are the different parts of a shuttle and functions?
What are the duties of a weaver?
What are the features of automatic loom?
What are the functions of Geo-textiles?
What are the methods of increasing figuring capacity of jacquard shedding?
What are the methods of lamination?
What are the purposes of cross border jacquard loom?
What are the quality requirements for foam backed garments?
What are the systems of harness mounting?
What are the types of box motion?
What are the uses of belt?
What are the warp protector motions?
What do you understand by swivel weaving?
What is break-even point?
What is jacquard shedding?
What is the defect of shedding?
What is the function of warp stop motion?
When and why CBC broadloom is used?
When and why different types of warp stop motions are used?
When open shed, centric shed and fine pitch of cross borders jacquard shedding is used?
Which fibers are used for medical textiles?
Which type of fork motion is better?
Why it is necessary to use feeler in automatic loom and what are their types?
Why it is necessary to use warp protector motion?
Why we use fork motion?
Write down the uses of lace
Write the difference between bonded and lamination
Write the difference between side weft fork and central weft fork motion
Write the features of automatic loom
Write the purposes of swivel weaving
Write the purposes of weft mixing motion

179. State the main features of the following fabrics:

Accordion fabric
Single lacoste
Double lacoste
Jersey cord
Milano rib etc

Viva Questions for WET PROCESSING TECHNOLOGY

What are the problems associated by hard water in desizing / scouring/ bleaching/ mercerizing/ dyeing / printing / finishing?
What are the advantages and disadvantages of non-ionic detergent?
Classify detergent.
What is singeing?
What are the objects of singeing?
Name some singeing machines
What is desizing?
What types of sizes commonly used for sizing?
Name some natural gum sizes or synthetic sizes
What are the methods of desizing?
What are the objects of desizing?
What are the methods of water softening?
Define scouring, objects of scouring
How can you measure the quality of scouring?
What is keir? What are the types of kier?
What are the precautions to be taken for kier boiling process?
Which builders are used in scouring process and this purposes?
Define bleaching and object of bleaching
Name some bleaching agent
What are the steps of continuous bleaching process?
Which bleaching agent is suitable for cotton bleaching?
Name some oxidizing and reducing bleaching agent
Classify water according to hardness.
What is dye or dyestuffs?
What is pigment?
What are the differences between dyes and pigments?
What is fastness?
What is color fastness? Give some example
What is hardness of water?
What is permanent hardness of water?
What is temporary hardness of water?
What is soap?
Which oils are used in soap manufacturing process?
What is detergent?
What do you know about primary color, secondary color, and tertiary color?
What are the primary colors in subs tract / pigment theory of color?
Classify dyes on the basis of physical form and application method
Give some examples of water insoluble dyes and water-soluble dyes
What is concentration gradient?
What is absorption isoform?
What is auxochromo, chromophore group in dye stuffs?
Give some examples of hydrophilic and hydrophobic fibres?
On which factors dye selection depends?
Classify dyeing machines.
Give some examples of fibre dyeing m/c, yarn dyeing m/c and fabric dyeing m/c
Give some advantages and disadvantages of jet, jigger and winch dyeing m/c
What are the methods of semi-continuous and continuous dyeing m/c?
Why direct dye is called direct cotton dye and substantive dye?
What fibres are mainly dyed with acid dye?
Why acid, vat, direct, basic dyes are so called?
What is vatting?
Give some properties of direct, acid, basic and vat dye.
What is printing?
What are the styles of printing?
What is thickener?
What are the methods of printing?
What are the advantages and disadvantages of block printing m/c, screen-printing m/c, rotary printing m/c, transfer printing m/c and stencil printing m/c?
Difference between automatic flat bed screen-printing and rotary printing machine
And in additive / light theory of color
How are pigments classified?
How are the rubbing fastness properties of pigment dyed fabrics?
How is flat screen prepared?
How is pigment applied for dyeing textiles?
How is pigment worked as colorant?
How is printing quality influenced by the following factors: by the stroke and by squeeze angle?
How is screen-printing m/cs classified?
Mention the stages of textile materials in which natural dyes can be applied.
Name some well-known ancient natural dyes with mentioning sources.
Name the equipments necessary for home dyeing and very small-scale commercial dyeing in case of natural dyes.
What are pre-metallised dyes?
What are the advantages and disadvantages of pigment dyeing?
What are the advantages of rotary screen-printing machine?
What are the advantages of synthetic thickener?
What are the categories of natural dyestuffs?
What are the differences between dye and pigment?
What are the disadvantages of metal complex dyes?
What are the factors control rate of dyeing?
What are the factors influence the penetration of paste through screen?
What are the factors that influence level dyeing?
What are the fastness properties of pigment dyed fabrics?
What are the fastness properties of pre-metallised dyes?
What are the properties of a good pigment?
What do you understand by natural Mordants?
What is 1:1 & 2:1 metal complex dye?
What is adsorption, sorption, desorption and diffusion?
What is affinity?
What is Alizerine?
What is auxochrome?
What is chromophore group?
What is dyeing equilibra?
What is dyeing kinetics?
What is electrical double layer?
What is emulsion thickener?
What is free volume model?
What is half emulsion?
What is HLB? Mention the range of HLB
What is oil in water emulsion?
What is organic and inorganic pigment?
What is partition co-efficient?
What is pigment ?
What is pore model?
What is print paste rheology?
What is rotary screen?
What is substantivity?
What is synthetic Mordant?
What is synthetic thickener?
What is the fundamental mechanism of screen-printing?
What is the squeeze systems used in flat screen-printing machine?
What is the squeeze systems used in rotary screen-printing machine?
Why is adhesive system used in a fully automatic flat screen-printing m/c?
Why is connective diffusion?
Why is dye aggregation?

113.What is a. water fastness?

Wash fastness
Perspiration fastness
Rubbing fastness
Light fastness
Sea water fastness
Chlorinated pool water

Viva Questions for SPECIAL WET PROCESSING (4th year)

Compare trichloro ethane, per chloro ethane & 1,1,1 trichloro ethane with water as a dyeing media
Describe contrast of hue & contrast of true
Describe D65,TL84, CWF, U30, W, F, UV etc
Describe FFT process of foam application
Describe Jannus mini foam application
Describe MITTER foam applicator for carpet
Describe Monforts foam application
Describe Monochromatic contrast and polychromatic contrast
Describe successive contrast and simultaneous contrast
Describe the available software
Describe the meaning of L* a* b*
Describe the term Metamerism
Describe trimatic theory of color vision
Describe with further classification, harmony of analogy & Harmony of contrast
Give a flow diagram of CCM system
Give a ideal flow diagram of a effluent treatment and disposal system
Give a relationship between foam density, blow ratio and litre weight
How the quality of can be evaluated?
Mention with suitable sketch the RSF foam application
What are hue, value, chroma?
What are the advantages & disadvantages of foam process?
What are the advantages and disadvantages of solvent dyeing?
What are the characteristics of raw effluent of a dye house?
What are the harmful effects of effluent on environment if it is not treated?
What are the light sensitive parts of a human eye?
What are the limitations of trimatic theory of color vision?
What are the limitations of use solvent in dyeing?
What are the minimum qualities of effluent required to discharge in natural watercourse?
What are the properties of CIE l* a* b* color space?
What are the reasons of defective color vision/
What are the requirements of an ideal solvent for dyeing?
What are the things needed for CCM system?
What are the types of cone cells?
What are the types of foam?
What are the types of sludge handling system?
What database is required for CCM system?
What do you mean by angle of sight?
What do you mean by CIE?
What do you mean by the term Anomalous trichromates?
What do you mean by the term CCM system?
What do you mean by the term chemical coagulation?
What do you mean by the term CIE X42?
What do you mean by the term color harmony?
What do you mean by the term K/S value?
What do you mean by the term Monochromates, dichromates and trichromates?
What do you mean by the term primary clarifier and secondary clarifier?
What do you mean by the terms a. color difference b. standard observer c. color contrast
What is blow ratio?
What is BOD and what is COD?
What is color-rendering index (CRI)?
What is cone sensitivity curve?
What is foam density?
What is foam?
What is Kubelka-Munk theory?
What is Lambert-Bur theory?
What is litre weight?
What is luminosity curve?
What is PHOTOPIC VISION?
What is rod and cone?
What is SCOTOPIC VISION?
What optical models are used in CCM system?
Why biological treatment needed for the effluent?
Why foam may be used for wet processing?
Why lamp options are necessary?
Why polyester can be dyed successfully at 100’c temp without carrier by using solvent?
Why solvent may be used for dyeing media?
Classify water according to hardness
Define German hardness, French hardness, English hardness and American hardness.
Describe the methods of anti-bacterial finish by using toxic agent?
Give at least one example from each type of detergent
Give the classification of detergent
Give the examples of anionic and non-ionic softeners
Give the procedures of correction of alkalinity?
How alkaline hardness can be determined?
How bacteria degrade and damage the fabric?
How creating physical barrier for the bacterial attack can protect fabric?
How detergency power can be evaluated?
How fabric can be protected from bacteria by chemical modification?
How temporary hardness can be determined by titration method?
How the iron problems can be minimized?
How you can distinguish silicon macro emulsion and silicon micro emulsion?
What are cellulose enzymes?
What are normal silicon softeners and what are amino-functional silicon polymers?
What are the bases of determination of total hardness by soap method?
What are the boilers feed water feeds standard?
What are the conditions that can cause bacterial growth?
What are the conventional methods of water softening?
What are the desirable properties of textile softeners?
What are the latest developments on anti-bacterial finish?
What are the mechanisms of oil/ dirt detachment from the fibre surface by detergents?
What are the minimum standards of dye house water quality?
What are the outstanding advantages of silicon softeners?
What are the problems may arise in the processing due to hardness?
What are the requirements of an anti-bacterial agent?
What are the special characteristics of amphoteric detergent?
What are the types of textile softeners?
What do you mean by the term “standard soap”? & How it can be prepared?
What do you mean by the term alkaline hardness?
What do you mean by the term surface-active agent?
What is demineralization process? What do you mean by this term compacting?
What is scudding factor and how it can be considered?
What problem may arise in the processing due to iron contact in water?
What problems may arise in the boiler due to hardness?
Why cationic softener is more used than the others?
Why the use of softener is increasing day by day?
Write about reactive softeners
Write notes on amphoteric softeners

Viva Questions for FINISHING

Define fabric finishing
Describe a: swizzing finish b. friction calendaring c. chasting finish d. embossing
Describe cloth mercerizing process
Describe the application procedure of silicon emulsion M478
Describe the application procedure of Valan PF and Cerol WB?
Describe the methods of determination of available chlorine in bleaching powder
Describe the methods of determination of strength of hydrogen peroxide
Explain sanforizing process with a schematic diagram
Give a general description of a calendaring m/c?
Give a general recipe for resin finishing
Give a schematic diagram of vapor loc system of scouring & also give the recipe
Give the application procedure DMEU?
Give the application procedure of Pyrovatex and THPC
Give the application procedure of DMDHEU
Give the application procedure of Persuitol VS & Phobotex FT?
Give the burning cycle of polymer
Give the classification of fabric finishing
Give the probable reactions may happened at the time of treatment of cotton material with urea formaldehyde.
Give the reactions has taken place with Di methylol di hydroxy ethylene urea and cotton
Give the thermal degradation chart of cellulose
How bleaching effect can be estimated?
How mercerizing effect can be assessed?
How mercerizing effect can be estimated?
How scouring effect can be estimated?
How yarn can be mercerized in hank form and continuous sheet form?
Mention with flow diagram of solvent scouring of cotton fabric
What are poly siloxanes?
What are the advantages and disadvantages of solvent scouring?
What are the advantages and disadvantages of DMEU?
What are the advantages and disadvantages of Kaurit AF140?
What are the advantages and disadvantages of urea formaldehyde resin?
What are the advantages and disadvantages of vapor loc system of scouring?
What are the advantages of di-methyl ethylene urea?
What are the advantages of THPC over other flame retardant chemicals?
What are the benefits obtained by the mercerization process?
What are the benefits of resin finishing on cotton fabric?
What are the effects of caustic soda concentration on mercerization process?
What are the effects of temperature on mercerization process?
What are the effects of tension on mercerization process?
What are the effects of time of treatment on mercerization process?
What are the effects of washing condition on mercerization process?
What are the factors to be considered to choice of finishing route?
What are the main elements of essentials of calendaring finish?
What are the objects of calendaring machine?
What are the objects of fabric finishing?
What are the objects of mercerization?
What are the objects of sanforizing process?
What are the required properties of an ideal flame retardant chemical/
What are the types of damping m/c?
What are the types of flame retardant process/
What are the types of poly siloxanes?
What are the types of raising m/c?
What do you mean by the term compressive shrinkage?
What do you mean by the term durable water repellant finish/
What do you mean by the term residual shrinkage?
What do you mean by the term solvent scouring?
What is DMDHEU? (Di methylol di hydroxy ethylene urea)
What is double acting m/c and single acting m/c?
What is emerizing?
What is flunnel fabric and what is fleece fabric?
What is Kaurit AF140?
What is mercerization?
What is polar fleece?
What is raising?
What is resin?
What is sanforizing?
What is urea formaldehyde precondensate?
What is water proof, water repellant and shower proof fabric?
What physical and chemical changes happened in the cotton fibre by mercerization process?
Why strength, hygroscopicity, dye-affinity and luster increased by mercerization process?

Viva Questions for GARMENTS TECHNOLOGY

How many garments factories in Bangladesh?
Application of computer in garments
Basic concepts of designing, pattern making, marker making and garments manufacturing
Brief idea on CAD/CAM systems for garments manufacturing.
Calculate the basic consumption of shirt & trouser.
Concept of sewing machine and falts
Concepts of merchandising in garments
Define inspection loop.
Define style and fashion
Describe Canada non-QUOTA and USA QUOTA categories numbers?
Describe computerized marker technique
Describe EEC garments description
Describe garments making sequence
Describe garments terms and definitions
Describe high frequency fusing machine
Describe historical background of garments?
Describe importance of fashion designing in RMG sectors
Describe the constrain of marker making
Describe the draw back of perforated marker, spirit duplicating and paint spray marker technique
Describe the types of fusing?
Different inspection systems used for inspecting raw-material, in-lime process and finishing process
Give a standard recipe of a normal wash
Historical background of our garments industry
Hoe many methods are available for resin coating?
How many components in shirt and trouser?
How many employees in garments sector?
How many fabric packages are normally used in garments?
How many garments buying houses in Bangladesh?
How many machines are used for shirt, trouser, T-shirt and polo shirt production per line?
How many types of interlining are used in garments?
How much time needed to complete pretreatment & dyeing of a batch of a garments?
How sample will make?
How the garments factories are classified?
How to prepare or make a report for industrial attachment?
How will you calculate marker efficiency?
How will you control the quality of garments?
How you will central fabric wastage outside the marker?
Mention the list of sewing machine for producing shirt & trouser.
Mention the responsibilities of a good merchandiser.
Name of some sewing machine manufacturer
Name some machines of a garments factory
Name some machines of a garments washing plant
Production planning, controlling and production management in relation to garments manufacturing
Show the basic standard measurement of ladies and gents
Tools and machine used for garments manufacturing
Tools of work measurement & time study and motion study
What affect could be achieve by bleach wash?
What are the advantages of computerized cutting?
What are the advantages of garments dyeing?
What are the advantages of round knife, straight knife and band knife?
What are the conditions of fusing?
What are the drawbacks of water jets, laser beam cutting?
What are the factors favoring of fashion?
What are the factors retarding of fashion?
What are the features of automatic fabric spreading?
What are the methods of fabric cutting?
What are the requirements of fabric spreading?
What are the sewing problems?
What are the special features of enzyme wash?
What are the systems of fabric inspection?
What are the systems of garments inspection?
What are trimmings?
What do you understand by garments are washed?
What is back stain?
What is categories numbers?
What is caustic wash?
What is double & reverse fusing?
What is enzyme wash?
What is garments dyeing?
What is grading?
What is GSP system and MFA?
What is GSP?
What is L/C, back-to-back L/C, invoice, FOB, C&F and CIF?
What is merchandising?
What is quality and how to control the quality of garments?
What is Quota and category?
What is QUOTA and no QUOTA?
What is seam slippage?
What is straight and stepped lay?
What is super white wash?
What is swatch, ticket number, stitch & seam, linge, Godet and disposable garments?
What is the export value of RMG sector in last year?
What is the L/R range in garments dyeing?
What is the outlook of normal washed garments?
What is the percentage of female worker in RMG sector?
What is the percentage of local knit fabric consumption in RMG sector?
What is the percentage of local woven fabric consumption in RMG sector?
What is the production of a basic shirt/line/day?
What is the production of a polo shirt /line/day?
What is the production of a T-shirt /line/day?
What is the role of stone during garments washing?
What is the role of temperature in garments washing?
What is the stone wash?
What type of garments is bleaching washed?
What types of dyes are used in garments dyeing?
What types of garments are dyed?
What types of garments are washed?
Which are the major garments importing countries from Bangladesh?
Which type of stone is used during washing?
Why back staining occurs?
Why die cutting, drill and notcher are used in garments cutting section?
Why enzyme wash is costly?
Why garments are washed?
Why garments industries are important in the economy of Bangladesh?
Why is bundling is necessary in cutting section?
Why manual spread are very popular in Bangladesh?
Why temperature, pressure and time are controlled in fusing?

Viva Questions for TEXTILE TESTING AND QUALITY CONTROL

Define bending length.
Define cloth cover factor.
Define drape and drape co-efficient
Define tensile strength, tearing strength & bursting strength.
Define the term fabric stiffness, drape co-efficient, serviceability and water permeability
Definition and relation of counting systems
Explain- C.R.L, C.R.E & C.R.T.
Explain TIV. Where it is used?
Explain WI
How can govern quality control by Men, machine and material?
How can you Asses the quality of a finished fabric?
How can you determine the presence of starch in the fabric?
How can you improve crease resistance properties of a fabric?
How can you measure the fineness of fiber?
In place of 12kg of Hydrogen per oxide (35%)w/w , What would be the equivalent amount of 50% w/w ?
Is there any difference between air permeability & air porosity?
Meaning of CSIRO: Common Wealth Scientific and Industrial Research Organization
Mention some available count in direct and indirect system
Mention some available instruments to measure the yarn count
Mention some fiber strength testing instruments
Mention some instrument involved to measure RH% & MR%
Mention some mechanical faults in weaving?
Mention some name of instruments to measure the amount of twist in yarn
Mention some process problems due to water hardness.
Mention some uses of stroboscope & Tachometer.
Mention some uses of variance length curves.
Mention the name of the methods of water repellency testing
Mention the theoretical range of maturity ratio
Standard testing atmospheric condition
Std moisture regain of cotton, PES, Nylon, Jute & Silk
What are the causes of loop length variation in weft knitting?
What are the causes of shade variation in exhausted dyeing?
What are the expressions we use to measure textile irregularity?
What are the points to be recommended for careful consideration in Bundesmann water repellency testing?
What are the properties to be considered for carpet grading?
What care should be done in sizing process?
What do you mean by +50% thick place or –50% thin place?
What do you mean by EDTA?
What do you mean by nep count?
What do you mean by PPM?
What do you mean by total hardness of water and what is the standard hardness of dye-house water?
What do you mean by yarn imperfection?
What do you understand by “Periodic Variation”?
What is breaking length and breaking extension?
What is conditioned count?
What is correct invoice weight (CIW)?
What is count (definition given Textile institute)?
What is elasticity, plasticity?
What is fiber fineness?
What is Hysteria’s effect?
What is moisture regain &Moisture content?
What is product control & process control with example?
What is quality, control, and quality control?
What is random and biased sampling?
What is relation between yarn dia and count?
What is RH%?
What is s twist and z twist?
What is sampling and objects of sampling?
What is stress, strain, yield stress, yield strain and yield point?
What is swelling?
What is Tenacity? Average tenacity of cotton and jute fiber?
What is the difference between direct and indirect counting system?
What is the effect of RH% on the textile mills?
What is the effect of twist on fabric properties?
What is the importance of QC in textile sector?
What is the principle of fabric thickness measurement?
What is the relation between maturity ratio and fiber fineness?
What is the relation between TPI and count?
What is the relationship between crimp% & take up%?
What is the relationship between the cloth cover & air permeability?
What is the system used for the fineness of fiber?
What is twist and why twist is inserted?
What term is used to express the fineness of fiber and yarn?
What types of fiber are found on the basis of maturity?