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Theory of Machine

Theory of Machine
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.

Increases
None of these
Remain same
Decreases

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Theory of Machine
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

0.8
0.6
0.4
0.2

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Theory of Machine
When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Maximum
Zero
None of these
Minimum

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Theory of Machine
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove)

secβ
cosecβ
cosβ
sinβ

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

Four times
Twice
Sixteen times
Eight times

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Theory of Machine
Tangential acceleration direction is

Perpendicular to angular velocity
Opposite to angular velocity
Along the angular velocity
May be any one of these

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