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Theory of Machine

Theory of Machine
The behaviour of gases can be fully determined by

1 law
2 laws
4 laws
3 laws

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Theory of Machine
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

None of these
Same
Unpredictable
Different

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

45 mm
95 mm
Slightly less than 45 mm
Slightly more than 45 mm

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Theory of Machine
Cam size depends upon

Pitch circle
Prime circle
Outer circle
Base circle

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Theory of Machine
The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be

Critically damped
Over-damped
Without vibrations
Under damped

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Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

ω² √(x² - r²)
ω √(x² - r²)
ω² √(r² - x²)
ω √(r² - x²)

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