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Theory of Machine

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

Gyroscope
Pantograph
All of these
Valve and valve gears

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Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.5615/ √δS
0.571/ √δS
0.6253/ √δS
0.4985/ √δS

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Theory of Machine
The unbalanced primary forces in a reciprocating engine are

Balanced by secondary forces
Not balanced
Balanced partially
Balanced completely

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Theory of Machine
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

Inner edge
None of these
Corners
Outer edge

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Theory of Machine
The rotating shafts tend to vibrate violently at whirling speeds because

Resonance is caused due to the heavy mass of the rotor
Bearing centre line coincides with the axis
The system is unbalanced
The shafts are rotating at very high speeds

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Theory of Machine
TJIE horse power transmitted by a belt is dependent upon

All of these
Tension on tight side of belt
Radius of pulley
Tension on slack side of belt

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