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Theory of Machine

Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

2ωv²
2ωv
ω²v
ωv

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Theory of Machine
Kinematic pairs are those which have two elements that

Permit relative motion
Have surface contact
Have line contact
Are held together

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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

10°-15°
30°-40°
25°-30°
15°-25°

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Theory of Machine
Which of the following mechanism is an approximate straight line motion mechanism?

Grasshopper mechanism
Robert's mechanism
Watt's mechanism
All of these

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Theory of Machine
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

Four times
Same
Two times
None of these

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Theory of Machine
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

2
1.5
0.5
1

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