1
GATE ME 2015 Set 1
Numerical
+2
-0
A precision instrument package (m = 1kg) needs to be mounted on a surface vibrating at 60 Hz. It is desired that only 5% of the base surface vibration amplitude be transmitted to the instrument. Assume that the isolation is designed with its natural frequency significantly lesser than 60Hz, so that the effect of damping may be ignored. The stiffness (in N/m) of the required mounting pad is _____________.
2
GATE ME 2015 Set 1
+2
-0.6
Considering massless rigid rod and small oscillations, the natural frequency (in rad/s) of vibration of the system shown in the figure is A
$$\sqrt {{{400} \over 1}}$$
B
$$\sqrt {{{400} \over 2}}$$
C
$$\sqrt {{{400} \over 3}}$$
D
$$\sqrt {{{400} \over 4}}$$
3
GATE ME 2014 Set 4
Numerical
+2
-0
A single degree of freedom system has a mass of 2kg, stiffness 8 N/m and viscous damping ratio 0.02. The dynamic magnification factor at an excitation frequency of 1.5 rad/s is ___________
4
GATE ME 2014 Set 2
+2
-0.6
What is the natural frequency of the spring mass system shown below? The contact between the block and the inclined plane is frictionless. The mass of the block is denoted by $$m$$ and the spring constants are denoted by $${k_1}$$ and $${k_2}$$ as shown below. A
$$\sqrt {{{{K_1} + {K_2}} \over {2m}}}$$
B
$$\sqrt {{{{K_1} + {K_2}} \over 4m}}$$
C
$$\sqrt {{{{K_1} - {K_2}} \over m}}$$
D
$$\sqrt {{{{K_1} + {K_2}} \over m}}$$
GATE ME Subjects
Engineering Mechanics
Strength of Materials
Theory of Machines
Engineering Mathematics
Machine Design
Fluid Mechanics
Turbo Machinery
Heat Transfer
Thermodynamics
Production Engineering
Industrial Engineering
General Aptitude
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