GATE2019 ME-2: 51

Arjun asked Feb 9, 2019 • recategorized Mar 5, 2021 by Lakshman Bhaiya

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Arjun asked Feb 9, 2019

GATE2019 ME-2: 50
The figure shows a pouring arrangement for casting of a metal block. Frictional losses are negligible. The acceleration due to gravity is $9.81 \: m/s^2$ .The time (in $s$, round off to two decimal places) to fill up the mold cavity (of size $40 \: cm \times 30 \: cm \times 15 \: cm$) is _____

The figure shows a pouring arrangement for casting of a metal block. Frictional losses are negligible. The acceleration due to gravity is $9.81 \: m/s^2$ .The time (in $s...

Arjun

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Arjun asked Feb 9, 2019

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Arjun asked Feb 9, 2019

GATE2019 ME-2: 52
The thickness of a sheet is reduced by rolling (without any change in width) using $600 \: mm$ diameter rolls. Neglect elastic deflection of the rolls and assume that the coefficient of friction at the roll-workpiece interface is $0.05$. The sheet enters ... final thickness that can be produced by this process in a single pass is __________ $mm$ (round off to two decimal places).

The thickness of a sheet is reduced by rolling (without any change in width) using $600 \: mm$ diameter rolls. Neglect elastic deflection of the rolls and assume that the...

Arjun

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Arjun asked Feb 9, 2019

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Arjun asked Feb 24, 2017

GATE2015-2-51
During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the TIG welding is carried out at a welding speed of $120$ $mm/min$ at the same arc voltage and ... so that weld quality remains the same. The welding current (in $A$) for this process is $40.00$ $44.72$ $55.90$ $62.25$

During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the...

Arjun

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Arjun asked Feb 24, 2017

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Arjun asked Feb 9, 2019

GATE2019 ME-1: 14
Which one of the following welding methods provides the highest heat flux $(W/mm^2)$? Oxy-acetylene gas welding Tungsten inert gas welding Plasma arc welding Laser beam welding

Which one of the following welding methods provides the highest heat flux $(W/mm^2)$?Oxy-acetylene gas weldingTungsten inert gas weldingPlasma arc weldingLaser beam weldi...

Arjun

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Arjun asked Feb 9, 2019

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Arjun asked Feb 9, 2019

GATE2019 ME-2: 15
The fluidity of molten metal of cast alloys (without any addition of fluxes) increases with increase in viscosity surface tension freezing range degree of superheat

The fluidity of molten metal of cast alloys (without any addition of fluxes) increases with increase inviscositysurface tensionfreezing rangedegree of superheat

Arjun

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Arjun asked Feb 9, 2019

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