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Theory of Machine

Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Are in phase
Lags by 90°
Leads by 90°
Leads by 180°

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Theory of Machine
In a reciprocating steam engine, which of the following forms a kinematic link?

Crankshaft and flywheel
Flywheel and engine frame
Piston rod and connecting rod
Cylinder and piston

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Theory of Machine
In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

n₁ + n₂
n₁ + n₂ - 2
n₁ + n₂ + 1
n₁ + n₂ - 1

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

Remain unaffected
Decreases
First increases and then decreases
Increases

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

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

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Theory of Machine
Cross head and guides form a

Turning pair
Sliding pair
Lower pair
Higher pair

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