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Theory of Machine

Theory of Machine
In S.H.M., acceleration is proportional to

Velocity
Rate of change of velocity
Displacement
All of these

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Theory of Machine
Which of the following governor is used to drive a gramophone?

Pickering governor
Hartnell governor
Porter governor
Watt governor

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Theory of Machine
A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism is

Data is not sufficient to determine same
Soundness would depend upon which link is kept fixed
Not sound
Kinematically sound

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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

30°-40°
10°-15°
15°-25°
25°-30°

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Theory of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by

μ₁ = μ/cos β
μ₁ = μ/sin β
μ₁ = μ cos β
μ₁ = μ sin β

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Line or point contact
None of these
Surface contact
Body contact

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