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Theory of Machine

Theory of Machine
In automobiles the power is transmitted from gear box to differential through

Universal joint
Knuckle joint
Hooke's joint
Bevel gear

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Theory of Machine
A reed type tachometer use the principle of

Longitudinal vibration
Transverse vibration
Torsional vibration
Damped free vibration

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Theory of Machine
Efficiency of a screw jack is given by

tanα/tan (α - φ)
tanα/tan (α +φ)
tan (α - φ)/tanα
tan (α + φ)/tanα

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Difficult to manufacture
Bulky
Both (A) and (B) above
Wears rapidly

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Theory of Machine
The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is

Equal to 2
Equal to 1
Greater than 2
Less than 2

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Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Doubled
Quadrupled
Halved
None of these

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