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Theory of Machine

Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n
n(n - 1)/2
n/2
n - 1

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

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

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Theory of Machine
The example of higher pair is

Belt, rope and chain drives
Ball and roller bearings
All of these
Gears, cams

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

Broken belt
Broken belt and its adjacent belts
All the belts
There is no need of changing any one as remaining belts can take care of transmission of load

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Theory of Machine
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

Downward
Backward
Forward
Upward

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Theory of Machine
Which of the following is a turning pair?

Lead screw of a lathe with nut
Ball and a socket joint
Shaft with collars at both ends fitted into a circular hole
Piston and cylinder of a reciprocating steam engine

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