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1
GATE ME 2014
MCQ (Single Correct Answer)
+1
-0.3
In vibration isolation, which one of the following statements is NOT correct regarding Transmissibility ($$T$$)?
A
$$T$$ is nearly unity at small excitation frequencies
B
$$T$$ can be always reduced by using higher damping at any excitation frequency
C
$$T$$ is unity at the frequency ratio of $$\sqrt 2 $$
D
$$T$$ is infinity at resonance for undamped systems
2
GATE ME 2014
MCQ (Single Correct Answer)
+1
-0.3
Critical damping is the
A
largest amount of damping for which no oscillation occurs in free vibration
B
smallest amount of damping for which no oscillation occurs in free vibration
C
largest amount of damping for which the motion is simple harmonic in free vibration
D
smallest amount of damping for which the motion is simple harmonic in free vibration
3
GATE ME 2014 Set 4
Numerical
+1
-0
A point mass is executing simple harmonic motion with an amplitude of $$10$$ mm and frequency of $$4$$ Hz. The maximum acceleration (m/s2) of the mass is _________.
Your input ____
4
GATE ME 2013
MCQ (Single Correct Answer)
+1
-0.3
If two nodes are observed at a frequency of $$1800$$ rpm during whirling of a simply supported long slender rotating shaft, the first critical speed of the shaft in rpm is
A
$$200$$
B
$$450$$
C
$$600$$
D
$$900$$
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