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1.
An increase in the length of the shaft results in ________ in vibration frequency.
2.
An increase in the modulus of rigidity results in ________ in vibration frequency.
3.
Which of the following relation is correct regarding free torsional vibrations of a single motor system?
4.
If the polar moment of inertia is increased to four times, then what will be the effect on free torsional vibrations of a single motor system?
5.
At a nodal point in a shaft, the amplitude of torsional vibration is ___________ .
6.
A shaft carrying two rotors will have
7.
Critical speed is expressed as ______.
8.
The first critical speed of an automobile running on a sinusoidal road is calculated by ______.
9.
For an underdamped harmonic oscillator, resonance ______.
10.
A shaft supported in ball bearings is assumed to be __________.