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Theory of Machine

Theory of Machine
Cross head and guides form a

Sliding pair
Turning pair
Lower pair
Higher pair

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Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

Maximum
Minimum
Zero
None of these

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Theory of Machine
Whirling speed of the shaft is the speed at which

Combination of transverse and longitudinal vibration occurs
Torsional vibrations occur
Shaft tends to vibrate vigorously in transverse direction
Shaft tends to vibrate in longitudinal direction

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Theory of Machine
When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in _________ directions.

None of these
Same
Opposite
Perpendicular

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Theory of Machine
Which of the following mechanisms produces mathematically an exact straight line motion?

Watt mechanism
Tchebicheff mechanism
Peaucellier's mechanism
Grasshopper mechanism

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Theory of Machine
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

None of these
Greater than
Equal to
Less than

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