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Theory of Machine

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
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Inversely proportional to
Independent of
Equal to
Directly proportional to

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

All of these
Valve and valve gears
Pantograph
Gyroscope

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

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

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Theory of Machine
The example of higher pair is

Ball and roller bearings
Gears, cams
All of these
Belt, rope and chain drives

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Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Perpendicular to line as per (A)
Joining the corresponding points
Not possible to determine with these data
At 45° to line as per (A)

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