GATE Mechanical 2014 Set 3 | Question: 16

Arjun asked in Heat Transfer Feb 19, 2017 recategorized Mar 4, 2021 by Lakshman Patel RJIT

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A source at a temperature of $500$ $K$ provides $1000$ $kJ$ of heat. The temperature of environment is $27^oC$. The maximum useful work (in $kJ$) that can be obtained from the heat source is _______

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Arjun asked in Heat Transfer Feb 19, 2017 recategorized Mar 4, 2021 by Lakshman Patel RJIT

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Arjun asked in Heat Transfer Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 48
A double-pipe counter-flow heat exchanger transfers heat between two water streams. Tube side water at $19$ liter/s is heated from $10^{\circ} \: C$ to $38^{\circ} \: C$. Shell side water at $25$ $litre/s$ is entering at $46^{\circ} \: C$. Assume ... density is $1000 \: kg/m^3$ and specific heat is $4186 \: J/kg.K$. The LM TD (in $^{\circ}C$) is _______

Arjun asked in Heat Transfer Feb 19, 2017

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Arjun asked in Heat Transfer Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 44
Heat transfer through a composite wall is shown in figure. Both the sections of the wall have equal thickness $(l)$. The conductivity of one section is $k$ and that of the other is $2k$. The left face of the wall is at $600$ $K$ and the right face is at $300$ $K$. The interface temperature $T_i$ (in $K$) of the composite wall is _______

Arjun asked in Heat Transfer Feb 19, 2017

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Arjun asked in Heat Transfer Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 42
An amount of $100 \: kW$ of heat is transferred through a wall in steady state. One side of the wall is maintained at $127^{\circ} \: C$ and the other side at $27^{\circ} \: C$. The entropy generated (in $W/K$) due to the heat transfer through the wall is _______

Arjun asked in Heat Transfer Feb 19, 2017

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Arjun asked in Heat Transfer Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 17
A sample of moist air at a total pressure of $85$ $kPa$ has a dry bulb temperature of $30^oC$ (saturation vapour pressure of water = $4.24$ $kPa$). If the air sample has a relative humidity of $65$%, the absolute humidity (in gram) of water vapour per $kg$ of dry air is _______

Arjun asked in Heat Transfer Feb 19, 2017

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Arjun asked in Heat Transfer Feb 19, 2017

GATE Mechanical 2014 Set 3 | Question: 47
A solid sphere of radius $r_1 = 20$ $mm$ is placed concentrically inside a hollow sphere of radius $r_2 = 30$ $mm$ as shown in the figure. The view factor $F_{21}$ for radiation heat transfer is $\dfrac{2}{3} \\$ $\dfrac{4}{9} \\$ $\dfrac{8}{27} \\$ $\dfrac{9}{4}$

Arjun asked in Heat Transfer Feb 19, 2017

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GATE Mechanical 2014 Set 3 | Question: 16

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