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Theory of Machine

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

All of these
Gyroscope
Pantograph
Valve and valve gears

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

15°-25°
10°-15°
30°-40°
25°-30°

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

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

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Theory of Machine
Two systems shall be dynamically equivalent when

The mass of two are same
M.I. of two about an axis through e.g. is equal
All of these
G. of two coincides

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Theory of Machine
The example of rolling pair is

Bolt and nut
Ball bearing and roller bearing
Ball and socket joint
Lead screw of a lathe

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Theory of Machine
According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on A. A triangle

A triangle
A straight line
A point
Two lines

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