1
GATE ME 2004
MCQ (Single Correct Answer)
+1
-0.3
A vibrating machine is isolated from the floor using springs. If the ratio of excitation frequency of vibration of machine to the natural frequency of the isolation system is equal to 0.5, the transmissibility ratio of isolation is
A
$${1 \over 2}$$
B
$${3 \over 4}$$
C
$${4 \over 3}$$
D
$$2$$
2
GATE ME 2001
MCQ (Single Correct Answer)
+1
-0.3
In the figure shown, the spring deflects by $$\delta $$ to position A ( the equilibrium position) when a mass $$m$$ is kept on it. During free vibration, the mass is at position $$B$$ at some instant. The change in potential energy of the spring mass system from position $$A$$ to position $$B$$ is GATE ME 2001 Theory of Machines - Vibrations Question 63 English
A
$${1 \over 2}k{x^2}$$
B
$${1 \over 2}k{x^2} - mgx$$
C
$${1 \over 2}k{\left( {x + \delta } \right)^2}$$
D
$${1 \over 2}k{x^2} + mgx$$
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