Related Questions

When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
A Thread
B Middle
C Shank
D Head
The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as
A damping factor
B damping coefficient
C logarithmic decrement
D magnification factor
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
A Linear variable differential transducer (LVDT)
B Dial gauge
C Accelerometer
D None of these
When there is a reduction in amplitude over every cycle of vibration, then the body is said to have
A free vibration
B forced vibration
C damped vibration
D none of the mentioned
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be
A 0.75 - 0.80
B 0.80 - 0.85
C 0.85 - 0.92
D Above 0.92
One half of a vibration of a body, is called
A Period time
B Oscillation
C Beat
D Amplitude
Vibration of which among the following produces only odd harmonics?
A A vibrating rod fixed at two ends
B A vibrating string fixed at two ends
C An air column in a closed organ pipe
D An air column in an open organ pipe
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 critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.
A Same
B Different
C Unpredictable
D None of these
In under damped vibrating system, the amplitude of vibration
A Decreases linearly with time
B Increases linearly with time
C Decreases exponentially with time
D Increases exponentially with time

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