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Theory of Machine

Theory of Machine
A rigid body possesses ________degrees of freedom

Six
Four
One
Two

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Theory of Machine
When the sleeve of a Porter governor moves downwards, the governor speed

Decreases
First increases and then decreases
Remain unaffected
Increases

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Theory of Machine
The mechanism in which two are turning pairs and two are sliding pairs, is called a

Elliptical trammel
All of these
Double slider crank chain
Scotch yoke mechanism

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Sliding pair
Turning pair
Spherical pair
Screw pair

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Theory of Machine
The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

ω/2π
π/ω
ω × 2π
2π/ω

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

A small value of pressure angle
A large value of pressure angle
There is no such relation with pressure angle
Something else

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