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Theory of Machine

Theory of Machine
The primary unbalanced force is maximum _________ in one revolution of the crank.

Twice
Sixteen times
Eight times
Four times

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Theory of Machine
For fluctuating loads, well suited bearing is

Needle roller bearing
Thrust bearing
Roller bearing
Ball bearing

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Theory of Machine
A circle passing through the pitch point with its center at the center of cam axis is known as

Prime circle
Pitch circle
Base circle
Outer circle

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Theory of Machine
The size of cam depends upon

Base circle
Pitch curve
Prime circle
Pitch circle

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Theory of Machine
The frequency of oscillation at compared to earth will be

2.44 times more
6 times less
2.44 times less
6 times more

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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

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

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