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Theory of Machine

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

All of these
Displacement
Velocity
Rate of change of velocity

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Theory of Machine
The method of direct and reverse cranks is used in engines for

Kinematic analysis
The control of speed fluctuations
Vibration analysis
Balancing of forces and couples

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

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Theory of Machine
________ is an inversion of Double slider crank chain.

Coupling rod of a locomotive
Hand pump
Scotch yoke mechanism
Reciprocating engine

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Theory of Machine
In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is

0°
90°
180°
270°

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Theory of Machine
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

Longitudinal vibrations
All of these
Transverse vibrations
Torsional vibrations

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