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Theory of Machine

Theory of Machine
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

360°
0°
90°
180°

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Theory of Machine
The maximum value of the pressure angle in case of cam is kept as

30°
14°
10°
20°

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Theory of Machine
For simple harmonic motion of the of follower, a cosine curve represents

All of these
Velocity diagram
Displacement diagram
Acceleration diagram

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Theory of Machine
The Ackermann steering mechanism is preferred to the Davis type in automobiles because

The former is having turning pair
The former is mathematically accurate
The former is most economical
The former is most rigid

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Theory of Machine
Klein's construction gives a graphic construction for

Acceleration polygon
Slider-crank mechanism
Velocity polygon
Four bar chain mechanism

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Theory of Machine
If two moving elements have surface contact in motion, such pair is known as

Rolling pair
Higher pair
Surface pair
Sliding pair

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