E-PolyLearning

6. Working principle of friction spinning machine is
a. aerodynamic spinning
b. electronic spinning
c. manual spinning
d. computerized spinning
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Answer: (a).aerodynamic spinning

7. Yarn wounds around circular packages at a rate of
a. 250 - 300 m/min
b. 300 - 450 m/min
c. 500 - 550 m/min
d. 600 - 850 m/min
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Answer: (a).250 - 300 m/min

8. Friction spinning method allows processing of fibers with lengths of
a. 5 - 100 mm
b. 50 - 90 mm
c. 100 - 200 mm
d. 350 - 500 mm
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Answer: (a).5 - 100 mm

9. Fibers become twisted because of friction and torque of two cylinders, rotating in
a. same direction
b. opposite direction
c. circular direction
d. upward and downward direction
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Answer: (b).opposite direction

10. Fibers arranged co axially gives a
a. layered effect
b. circular effect
c. continuous effect
d. shaded effect
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Answer: (a).layered effect

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