When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Theory of Machine
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Oscillate with increasing time period

Oscillate with decreasing amplitude

Return to equilibrium position without oscillation

Oscillate with constant amplitude

Oscillate with increasing time period

Oscillate with decreasing amplitude

Return to equilibrium position without oscillation

Oscillate with constant amplitude

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Theory of Machine
Crowning on pulleys helps

Increase belt and pulley life

In decreasing the slip of the belt

In increasing velocity ratio

For automatic adjustment of belt position so that belt runs centrally

Increase belt and pulley life

In decreasing the slip of the belt

In increasing velocity ratio

For automatic adjustment of belt position so that belt runs centrally

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Theory of Machine
The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.

More than

None of these

Same as

Less than

More than

None of these

Same as

Less than

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Theory of Machine
Efficiency of a screw jack is given by

tan (α + φ)/tanα

tan (α - φ)/tanα

tanα/tan (α - φ)

tanα/tan (α +φ)

tan (α + φ)/tanα

tan (α - φ)/tanα

tanα/tan (α - φ)

tanα/tan (α +φ)

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Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Less than unity

Greater than unity

Zero

Equal to unity

Less than unity

Greater than unity

Zero

Equal to unity

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Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by

T = W.r tan(φ + α)

T = W.r tan(φ - α)

T = W.r tanα

T = W.r tanφ

T = W.r tan(φ + α)

T = W.r tan(φ - α)

T = W.r tanα

T = W.r tanφ

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Theory of Machine

Theory of Machine When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Theory of Machine Crowning on pulleys helps

Theory of Machine The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.

Theory of Machine Efficiency of a screw jack is given by

Theory of Machine In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Theory of Machine The factional torque for square thread at the mean radius r while raising load W is given by

Theory of Machine
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Theory of Machine
Crowning on pulleys helps

Theory of Machine
The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.

Theory of Machine
Efficiency of a screw jack is given by

Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by