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Theory of Machine

Theory of Machine
The size of cam depends upon

Base circle
Pitch curve
Prime circle
Pitch circle

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Theory of Machine
Klein's construction is useful to determine

Angular acceleration of various parts
Acceleration of various parts
Displacement of various parts
Velocity of various parts

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Theory of Machine
The instantaneous centers which vary with the configuration of mechanism are called

None of these
Neither fixed nor permanent instantaneous centers
Permanent instantaneous centers
Fixed instantaneous centers

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

Increases
Decreases
Remain unaffected
First increases and then decreases

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Theory of Machine
The periodic time of one oscillation for a simple pendulum is

2π. √(l/g)
(1/2π). √(g/l)
2π. √(g/l)
(1/2π). √(l/g)

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Theory of Machine
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

ω₁.ω₂.r
(ω₁ + ω₂) r
(ω₁ - ω₂) 2r
(ω₁ - ω₂) r

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