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Theory of Machine

Theory of Machine
The lower pairs are _________ pairs.

Friction closed
Self-closed
Force-closed
None of these

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Theory of Machine
The number of centers in a crank driven slider crank mechanism is

2
4
6

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Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

80°- 90°
60°-70°
50°- 60°
70°- 80°

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Theory of Machine
The frequency of oscillation of a compound pendulum is

2π. √[(kG² + h²)/gh]
2π. √[gh/(kG² + h²)]
(1/2π). √[(kG² + h²)/gh]
(1/2π). √[gh/(kG² + h²)]

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Theory of Machine
A point on a link connecting double slider crank chain traces a

Hyperbola
Parabola
Circle
Ellipse

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

Increases
Decreases
First increases and then decreases
Remain unaffected

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