Related Questions

If the damping factor for a vibrating system is unity, then the system will be
A Over damped
B Under damped
C Critically damped
D Without vibrations
In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if $$\frac{\omega }{{\omega {\text{n}}}}$$ is
A Equal to 1
B Equal to 2
C Less than 2
D Greater than 2
The transmissibility, for all values of damping factor, will be less than unity, if $$\frac{\omega }{{\omega {\text{n}}}}$$ is
A Equal to 1
B Less than 2
C Equal to 2
D Greater than 2
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.
A Equal to
B Directly proportional to
C Inversely proportional to
D Independent of
In order to increase the damping of a badly underdamped system which of following compensators may be used ?
A Phase-lead
B Phase-lag
C Both (A) and (B)
D Either (A) and (B)
E None of the above
The effect of error damping is to
A Provide larger settling lime
B Delay the response
C Reduce steady state error
D All of the mentioned
________ has the best damping properties.
A Diamond
B High speed steel
C Mild steel
D Cast iron
In the field controlled motor the entire damping comes from
A Armature resistance
B Back emf
C Motor friction and load
D Field resistance
If the poles lie in second quadrant, damping ratio is
A 1
B less than 1
C zero
D more than 1
If poles lie in first quadrant, damping ratio is
A 1
B More than 1
C less than 1
D Zero

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