1) Which motion has magnitude of static frictional force directly proportional to normal reaction?
a. Actual motion
b. Impending motion
c. Both a. and b.
d. None of the above
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Answer
Explanation
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ANSWER: Impending motion
Explanation:
No explanation is available for this question!
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2) Which formula is used to calculate angle of static friction (Φs)?
a. tan -1 μ s
b. sin -1 μ s
c. cos -1 μ s
d. none of the above
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Answer
Explanation
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ANSWER: tan-1 μs
Explanation:
No explanation is available for this question!
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3) Frictional force depends on ________
a. surface area in contact
b. roughness of surface
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: roughness of surface
Explanation:
No explanation is available for this question!
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4) Which belt is used to transmit power at high speeds?
a. Flat belt
b. V belt
c. Both a. and b.
d. None of the above
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Answer
Explanation
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ANSWER: V belt
Explanation:
No explanation is available for this question!
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5) What is the relation between tight side and slack side for a flat belt?
a. (Tight side x slack side) = e μβ
b. (Tight side / slack side) = e μβ
c. (Tight side + slack side) = e μβ
d. None of the above
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Answer
Explanation
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ANSWER: (Tight side / slack side) = eμβ
Explanation:
No explanation is available for this question!
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6) Which of the following statements is true for flat belts?
a. They are used for short distances between the pulleys
b. They have high efficiency
c. They are used in lathe machines
d. All of the above
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Answer
Explanation
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ANSWER: They are used in lathe machines
Explanation:
No explanation is available for this question!
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