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Theory of Machine

Theory of Machine
A cam mechanism imparts following motion

Oscillating
Reciprocating
All of these
Rotating

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Screw pair
Turning pair
Sliding pair
Spherical pair

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Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

34
10
20
30

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Theory of Machine
In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

Will change
Will not occur
Could change or remain unaltered depending on which link is fixed
Will remain same

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Theory of Machine
Which of the following disciplines provides study of relative motion between the parts of a machine?

Kinematics
Applied mechanics
Theory of machines
Mechanisms

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Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Leads by 90°
Leads by 180°
Are in phase
Lags by 90°

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