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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 4
6.
When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than
0.25
0.5
1
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
When the nature of contact between the elements of a pair is such that it can turn or revolve about a fixed axis, the pair is known as a rolling pair.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Creep in belt drive is due to
weak material of the belt
weak material of the pulley
uneven extensions and contractions of the belt when it passes from tight side to slack side
expansion of the belt
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Which of the following statement is wrong?
A round bar in a round hole form a turning pair
A square bar in a square hole form a sliding pair
A vertical shaft in a foot step bearing forms a successful constraint
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
A watt's governor can work satisfactorily at speeds from
60 to 80 r.p.m.
80 to 100 r.p.m.
100 to 200 r.p.m.
200 to 300 r.p.m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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