A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

Theory of Machine
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

2.50 mm

2.22 mm

3.0 mm

2 mm

2.50 mm

2.22 mm

3.0 mm

2 mm

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Theory of Machine
When the particles of a body moves perpendicular to its axis, then the body is said to have

Transverse vibration

Longitudinal vibration

Torsional vibration

None of these

Transverse vibration

Longitudinal vibration

Torsional vibration

None of these

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Theory of Machine
Which gear is used for connecting two coplanar and intersecting shafts?

Spur gear

Bevel gear

Helical gear

None of these

Spur gear

Bevel gear

Helical gear

None of these

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Theory of Machine
In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as

Logarithmic decrement

Critical damping ratio

Magnification factor

Damping factor

Logarithmic decrement

Critical damping ratio

Magnification factor

Damping factor

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Theory of Machine
The swaying couple is due to the

Partial balancing

Secondary unbalanced force

Two cylinders of locomotive

Primary unbalanced force

Partial balancing

Secondary unbalanced force

Two cylinders of locomotive

Primary unbalanced force

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

(1/2) μ W R cosecα

(2/3) μ W R cosecα

μ W R cosecα

(3/4) μ W R cosecα

(1/2) μ W R cosecα

(2/3) μ W R cosecα

μ W R cosecα

(3/4) μ W R cosecα

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Theory of Machine

Theory of Machine When the particles of a body moves perpendicular to its axis, then the body is said to have

Theory of Machine Which gear is used for connecting two coplanar and intersecting shafts?

Theory of Machine In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as

Theory of Machine The swaying couple is due to the

Theory of Machine The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

Theory of Machine
When the particles of a body moves perpendicular to its axis, then the body is said to have

Theory of Machine
Which gear is used for connecting two coplanar and intersecting shafts?

Theory of Machine
In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as

Theory of Machine
The swaying couple is due to the

Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)