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Theory of Machine

Theory of Machine
The velocity of a body moving with simple harmonic motion is __________ at the mean position.

Minimum
Maximum
Zero
None of these

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Theory of Machine
In a steam engine, the link constitutes a

All of these
Piston, piston rod and cross-head
Connecting rod with big and small end brasses, caps and bolts
Crank pin, crankshaft and flywheel

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Theory of Machine
The Coriolis component of acceleration exists whenever a point moves along a path that has

Linear displacement
Rotational motion
Gravitational acceleration
Tangential acceleration

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Theory of Machine
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

None of these
Stable
Isochronous
Unstable

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Theory of Machine
When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to

One
π
π/2
Zero

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Theory of Machine
In under damped vibrating system, the amplitude of vibration

Increases linearly with time
Decreases exponentially with time
Increases exponentially with time
Decreases linearly with time

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