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Theory of Machine

Theory of Machine
In automobiles the power is transmitted from gear box to differential through

Bevel gear
Universal joint
Hooke's joint
Knuckle joint

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Theory of Machine
In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

x₁/x₂
log(x₁.x₂)
loge(x₁/x₂)
log(x₁/x₂)

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Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Increases as the radius of rotation decreases
Decreases as the radius of rotation increases
Increases as the radius of rotation increases
Remains constant for all radii of rotation

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Theory of Machine
Which gear is used for connecting two coplanar and intersecting shafts?

Helical gear
Bevel gear
Spur gear
None of these

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Theory of Machine
The lower pairs are _________ pairs.

None of these
Self-closed
Friction closed
Force-closed

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Theory of Machine
V-belts are usually used for

Long drives
Long and short drives
None of these
Short drives

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