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Theory of Machine

Theory of Machine
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

0°
360°
180°
90°

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

More
Same
None of these
Less

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Theory of Machine
Which of the below are inversions of slider crank mechanism? 1. Oscillating cylinder engine mechanism 2. Toggle mechanism 3. Radial cylinder engine mechanism 4. Quick return mechanism

1, 2 and 3
2, 3 and 4
1, 2 and 4
1, 3 and 4

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Theory of Machine
In a radial cam, the follower moves

Along the cam axis
In a direction perpendicular to the cam axis
In any direction irrespective of the cam axis
In a direction parallel to the cam axis

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Theory of Machine
In S.H.M., acceleration is proportional to

Rate of change of velocity
All of these
Velocity
Displacement

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Theory of Machine
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Remains constant
None of these
Decreases
Increases

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