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Theory of Machine

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

All of these
Pantograph
Valve and valve gears
Gyroscope

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Theory of Machine
The motion of a shaft in a circular hole is an example of

Completely constrained motion
Incompletely constrained motion
Successfully constrained motion
None of these

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Theory of Machine
When the primary direct crank of a reciprocating engine makes an angle of 'θ' with the line of stroke, then the secondary direct crank will make an angle of _________ with the line of stroke.

θ/2
4θ
2θ
θ

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Theory of Machine
The ratio of maximum fluctuation of energy to the work-done per cycle is called

Coefficient of fluctuation of energy
Maximum fluctuation of energy
Fluctuation of energy
None of these

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Theory of Machine
A foot step bearing and rotor of a vertical turbine form examples of

Partially constrained motion
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion

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Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

(1/2). I ω ωP
(1/2).Iω²
Iω²
I ω ωP

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