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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 4
41.
In vibration isolation system, if ω/ωn > 2, then for all values of damping factor, the trans-missibility (i.e. the ratio of the force transmitted to the force applied) will be less than unity.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Two pulleys of radii r1 and r2 and at distance x apart are connected by means of a cross belt drive. The length of the belt is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
ω2(r1 - r2)(1 - cos2θ)
ω2(r1 + r2)(1 + cos2θ)
ω2(r1 + r2)
ω2(r1 - r2)(1 - sin2 θ)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
For the brake to be self locking, the force P at C shown in the below figure, should
be zero
act in upward direction
act in downward direction
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
In a four bar chain or quadric cycle chain
each of the four pairs is a turning pair
one is a turning pair and three are sliding pairs
two are turning pairs and two are sliding pairs
three are turning pairs and one is a sliding pair
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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