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Theory of Machine

Theory of Machine
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

l = 2p - 4
l = 2p - 5
l = 2p - 2
l = 2p - 3

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Theory of Machine
Peaucellier’s mechanism has

Six links
Twelve links
Eight links
Four links

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Theory of Machine
A rigid body possesses ________degrees of freedom

Two
Four
Six
One

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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
Sliding pair
Spherical pair
Turning pair

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

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

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Theory of Machine
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

Forward
Downward
Upward
Backward

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