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Theory of Machine

Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n
n - 1
n/2
n(n - 1)/2

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Theory of Machine
When the axes of the first and last wheels are coaxial, then the train is known as

Simple train of wheels
Compound train of wheels
Reverted gear train
Epicyclic gear train

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Theory of Machine
In involute gears, the pressure angle is

Always constant
Dependent on the size of gears
Dependent on the size of teeth
Always variable

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

None of these
Watt governor
Porter governor
Hartnell governor

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Theory of Machine
The partial balancing means

Balancing partially reciprocating masses
Best balancing of engines
Balancing partially revolving masses
All of these

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Theory of Machine
The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω² r₁ sinθ
ω² (R - r₁) cosθ
ω² (R - r₁) sinθ
ω² R cosθ

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