Mechanics of Textile Machinery (MCQ : MODULE 7- Cone Pulleys )

Question 1: The profiled surfaces of driving and driven cones in roving machines are

Convex and concave respectively
Concave and convex respectively
Straight
None of the above

Question 2: The shifting of belt on cone pulleys on roving machine is linear in the case of

Hyperbolic cone pulleys
Straight cone pulleys
Both hyperbolic and straight cone pulleys
None of the above

Question 3: If belt slips over cone pulleys, then

Bobbin speed reduces and roving will be stretched
Bobbin speed increases and roving will be stretched
Bobbin speed reduces and slackness accumulates on roving
Bobbin speed increases and slackness accumulates on roving

Question 4: The shifting of belt from bare to full bobbin on a roving machine is

Progressively shortened in the case of hyperbolic cones
Constant in the case of straight cones
Progressively increased in the case of straight cones
Progressively shortened in the case of straight cones

Question 5: When the thickness of fibre bat under feed roller of a scutcher increases by 20% from the reference value, then speed of feed roller will

Decreases by 20%
Decreases by 16.67%
Decreases by 25%
Increase by 16.67%

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