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Theory of Machine

Theory of Machine
Scotch yoke mechanism is used to generate

Inversions
Square roots
Logarithms
Sine functions

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Theory of Machine
If the pressure angle is __________, a reciprocating follower will jam in its bearings.

Small
Too large
Too small
Large

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Theory of Machine
In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed

Pickering governor
Inertia governor
Wilson Hartnell governor
Hartung governor

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Theory of Machine
The power of a Porter governor is equal to

[c²/(1 + 2c)] (m + M) g.h
[2c²/(1 + 2c)] (m + M) g.h
[3c²/(1 + 2c)] (m + M) g.h
[4c²/(1 + 2c)] (m + M) g.h

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Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Increases as the radius of rotation decreases
Increases as the radius of rotation increases
Decreases as the radius of rotation increases
Remains constant for all radii of rotation

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Theory of Machine
The primary unbalanced force is maximum _________ in one revolution of the crank.

Twice
Sixteen times
Four times
Eight times

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