1
GATE ME 2015 Set 2
Numerical
+1
-0
In a spring-mass system the mass is m and the spring constant is $$k$$. The critical damping coefficient of the system is $$0.1$$ kg/s. In another spring mass system, the mass is $$2m$$ and the spring constant is $$8k$$. The critical damping coefficient (in kg/s) of this system is __________
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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
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
4
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 _________.
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