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Theory of Machine

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l + 1
l
l - 1
l - 2

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Theory of Machine
If the damping factor for a vibrating system is unity, then the system will be

Under damped
Without vibrations
Over damped
Critically damped

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Theory of Machine
Bifilar suspension method is used to find the

Moment of inertia of the body
Periodic time of the body
Frequency of vibration of the body
Angular acceleration of the body

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Theory of Machine
The advantage of the piston valve over the slide valve is that in the former case

Power absorbed is less
Wear is less
Both wear and power absorbed are low
The pressure developed being high provides tight sealing

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

Valve and valve gears
Gyroscope
All of these
Pantograph

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Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

D₁/D₂
D₁
D₁.D₂
D₂/D₁

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