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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
None of these
Zero

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

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

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Theory of Machine
Which of the following is an inversion of a single slider crank chain?

All of these
Rotary internal combustion engine
Oscillating cylinder engine
Pendulum pump

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Theory of Machine
The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to

135° and 315°
270° and 360°
0° and 90°
90° and 180°

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Theory of Machine
Which of the following is an example of sliding pair?

Piston and cylinder of a reciprocating steam engine
Ball and a socket joint
Lead screw of a lathe with nut
Shaft with collars at both ends fitted into a circular hole

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Theory of Machine
Throw of a cam is the maximum distance of the follower from

Base circle
Prime circle
Pitch circle
Root circle

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