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Theory of Machine

Theory of Machine
Ackermann steering gear consists of

Higher pairs
Turning pairs
Rolling pairs
Sliding pairs

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Theory of Machine
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

To raise the bow and stern
To lower the bow and stern
To raise the bow and lower the stern
To raise the stern and lower the bow

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Theory of Machine
In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

log(x₁/x₂)
x₁/x₂
log(x₁.x₂)
loge(x₁/x₂)

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Theory of Machine
If the opposite links of a four bar linkage are equal, the links will always form a

Parallelogram
Pentagon
Triangle
Rectangle

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Theory of Machine
The number of links and instantaneous centers in a reciprocating engine mechanism are

4, 5
4, 4
4, 6
5, 4

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

A large value of pressure angle
A small value of pressure angle
Something else
There is no such relation with pressure angle

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