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Theory of Machine

Theory of Machine
Which of the following mechanism is obtained from lower pair?

Valve and valve gears
Pantograph
All of these
Gyroscope

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Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

At the origin
Any one of these
Above the origin
Below the origin

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Theory of Machine
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to

Reduce slip
Ensure proper alignment
Reduce vibration
Ensure uniform loading

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

Slightly less than 95 mm
95 mm
45 mm
Slightly more than 95 mm

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Theory of Machine
In a radial cam, the follower moves

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

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Theory of Machine
At the nodal point in a shaft, the amplitude for torsional vibration will be

Maximum
Minimum
Infinity
Zero

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