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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 4
16.
An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by
increasing the length of bar
decreasing the cross-sectional area of the bar
decreasing the modulus of elasticity of the bar
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The ratio of driving tensions in V-belt drives is __________ flat belt drives.
equal to
sin α times more than
sin α times less than
cosec α times more than
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A shaft is designed on the basis of rigidity and stiffness.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Which of the following spring is used in mechanical wrist watch?
Helical compression spring
Spiral spring
Torsion spring
Bellevile spring
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.
intersecting
non-intersecting and non-parallel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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