GATE Mechanical 2014 Set 3 | Question: 33

Arjun asked in Applied Mechanics and Design Feb 19, 2017 recategorized Mar 4, 2021 by Lakshman Patel RJIT

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The damping ratio of a single degree of freedom spring-mass-damper system with mass of $1 kg$, stiffness $100 N/m$ and viscous damping coefficient of $25 N.s/m$ is _______

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Arjun asked in Applied Mechanics and Design Feb 19, 2017 recategorized Mar 4, 2021 by Lakshman Patel RJIT

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Arjun asked in Applied Mechanics and Design Feb 27, 2017

GATE2017 ME-2: 33
A helical compression spring made of a wire of circular cross-section is subjected to a compressive load. The maximum shear stress induced in the cross-section of the wire is $24$MPa. For the same compressive load, if both the wire diameter and the mean coil diameter are doubled, the maximum shear stress (in MPa) induced in the cross-section of the wire is __________.

Arjun asked in Applied Mechanics and Design Feb 27, 2017

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Arjun asked in Applied Mechanics and Design Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 55
For spot welding of two steel sheets (base metal) each of $3$ $mm$ thickness, welding current of $10000$ $A$ is applied for $0.2$ $s$. The heat dissipated to the base metal is $1000$ $J$ ... $J$ and interfacial contact resistance between sheets is $0.0002$ $Ω$, the volume (in $mm^3$) of weld nugget is _______

Arjun asked in Applied Mechanics and Design Feb 19, 2017

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Arjun asked in Applied Mechanics and Design Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 37
A four-wheel vehicle of mass $1000 \: kg$ moves uniformly in a straight line with the wheels revolving at $10 \: rad/s$. The wheels are identical, each with a radius of $0.2 \: m$. Then a constant braking torque is applied to all the ... a uniform deceleration. For the vehicle to stop in $10 \: s$, the braking torque (in $N.m$) on each wheel is______

Arjun asked in Applied Mechanics and Design Feb 19, 2017

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Arjun asked in Applied Mechanics and Design Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 30
A drum brake is shown in the figure. The drum is rotating in anticlockwise direction. The coefficient of friction between drum and shoe is $0.2$. The dimensions shown in the figure are in $mm$. The braking torque (in $N.m$) for the brake shoe is _______

Arjun asked in Applied Mechanics and Design Feb 19, 2017

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Arjun asked in Applied Mechanics and Design Feb 24, 2017

GATE2016-3-37
A single degree of freedom spring-mass system is subjected to a harmonic force of constant amplitude. For an excitation frequency of $\sqrt{\dfrac{3k}{m}}$, the ratio of the amplitude of steady state response to the static deflection of the spring is __________

Arjun asked in Applied Mechanics and Design Feb 24, 2017

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GATE Mechanical 2014 Set 3 | Question: 33

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