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Theory of Machine

Theory of Machine
A slider crank chain consists of following numbers of turning and sliding pairs

3, 1
1, 3
4, 0
2, 2

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

All the belts
There is no need of changing any one as remaining belts can take care of transmission of load
Broken belt
Broken belt and its adjacent belts

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Theory of Machine
Which of the following mechanism is obtained from lower pair?

Pantograph
All of these
Valve and valve gears
Gyroscope

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Theory of Machine
The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam)

R (1 - sinθ)
R (1 - cosθ)
(R - r₁) (1 - cosθ)
(R - r₁) (1 - sinθ)

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

First increases and then decreases
Increases
Decreases
Remain unaffected

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Theory of Machine
The C.G. of a link in any mechanism would experience

No acceleration
Linear acceleration
Angular acceleration
Both angular and linear accelerations

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