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Theory of Machine

Theory of Machine
Rectilinear motion of piston is converted into rotary by

Cross head
Gudgeon pin
Connecting rod
Slider crank

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Theory of Machine
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

Zero and minimum
Minimum and maximum
Zero and maximum
Maximum and zero

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Theory of Machine
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

None of these
Same
Two times
Four times

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Theory of Machine
Which of the following is a pendulum type governor?

None of these
Watt governor
Hartnell governor
Porter governor

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Theory of Machine
The frequency of oscillation of a torsional pendulum is

r/2πk. √(g/l)
r/2πk. √(l/g)
2πk/r. √(g/l)
2πr/k. √(g/l)

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

(2/3) μ W R cosecα
(1/2) μ W R cosecα
μ W R cosecα
(3/4) μ W R cosecα

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