Rotor Spinning
Air Vortex spinning
Disc Spinning
Air Jet spinning

Question 2: The spinning methods based on Open End spinning principle result in high production rates as compared to Ring Spinning because in these methods

The drafting and twisting are isolated
Increases the hairiness of the yarn
The twisting and winding are isolated
The twisting and winding are isolated

Question 3: Rotor spinning is suitable for medium and fine counts.

True
False

Question 4: The term “Back doubling” in rotor spinning refers to the number of doubling applied to the fibre strand before the rotor spinning machine.

True
False

Question 5: As the fibres land on the rotor, the fibres are in groups of

1-5 fibres
10-50 fibres
100-500 fibres
1000 fibres

Question 6: The amount of rotation given to a fibre as it moves into the collecting groove does not depend on

The rotor diameter
Opening roller diameter
The side wall angle of rotor
The axial distance from the feed tube exit to the collecting groove of rotor

Question 7: Which of the groove type or types is suitable to produce strong coarse yarn in rotor spinning?

S-Groove
S- and G- grooves
U-groove
U- and G- grooves

Question 8: Which of the following yarns have the best fibre orientation and parallization?

Rotor spun yarn
Friction spun yarn
Ring spun yarn
Vortex spun yarn

Question 9: Which of the following yarn have the best mass evenness?

Ring spun yarn
Friction spun yarn
Rotor spun Yarn
Vortex spun yarn

Question 10: In MJS air jet spinning

One air jet
Two air jets
Three air jets
Four air jets

 

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