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Theory of Machine

Theory of Machine
The lower pair is a

Closed pair
Point contact pair
Open pair
Sliding pair

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Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.6253/ √δS
0.4985/ √δS
0.571/ √δS
0.5615/ √δS

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

μ W R
(1/2) μ W R
(3/4) μ W R
(2/3) μ W R

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Theory of Machine
For simple harmonic motion of the of follower, a cosine curve represents

Acceleration diagram
Velocity diagram
All of these
Displacement diagram

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Theory of Machine
The purpose of a link is to

Guide other links
Act as a support
All of these
Transmit motion

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Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

60°-70°
80°- 90°
70°- 80°
50°- 60°

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