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Theory of Machine

Theory of Machine
The moment on the pulley which produces rotation is called

Momentum
Torque
Inertia
Moment of momentum

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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

3.0 mm
2.50 mm
2 mm
2.22 mm

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Theory of Machine
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

Less
Same
Data are insufficient to determine same
More

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Theory of Machine
Which of the following is a spring controlled governor?

Hartnell governor
Wilson-Hartnell governor
All of these
Hartung governor

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Theory of Machine
The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is

3π Hz
6 Hz
6π Hz
3 Hz

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Theory of Machine
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to

40°
30°
10°
20°

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