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GATE2015-2-17
0
votes
The COP of a Carnot heat pump operating between $6^{\circ}C$ and $37^{\circ}C$ is ___________
gateme-2015-set2
numerical-answers
heat-pump-cycles
applications
fluid-mechanics-and-thermal-science
asked
Feb 24, 2017
in
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♦
Arjun
24.6k
points
recategorized
Mar 4
by
♦
Lakshman Patel RJIT
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GATE2015-2-47
In a Rankine cycle, the enthalpies at turbine entry and outlet are $3159$ $kJ/kg$ and $2187$ $kJ/kg$, respectively. If the specific pump work is $2$ $kJ/kg$, the specific steam consumption (in $kg/kW$-$h$) of the cycle based on net output is _______________
In a Rankine cycle, the enthalpies at turbine entry and outlet are $3159$ $kJ/kg$ and $2187$ $kJ/kg$, respectively. If the specific pump work is $2$ $kJ/kg$, the specific steam consumption (in $kg/kW$-$h$) of the cycle based on net output is _______________
asked
Feb 24, 2017
in
Applications
Arjun
24.6k
points
gateme-2015-set2
numerical-answers
applications
fluid-mechanics-and-thermal-science
0
votes
0
answers
GATE2015-2-45
One kg of air ($R=287 \: J/kg – K$) undergoes an irreversible process between equilibrium state $1(20^{\circ}C$, $0.9 \: m^3$) and equilibrium state $2 ( 20^{\circ} C$, $0.6\: m^3$). The change in entropy $s_2 – s_1$ (in $J/kg – K$) is _______
One kg of air ($R=287 \: J/kg – K$) undergoes an irreversible process between equilibrium state $1(20^{\circ}C$, $0.9 \: m^3$) and equilibrium state $2 ( 20^{\circ} C$, $0.6\: m^3$). The change in entropy $s_2 – s_1$ (in $J/kg – K$) is _______
asked
Feb 24, 2017
in
Applications
Arjun
24.6k
points
gateme-2015-set2
numerical-answers
applications
fluid-mechanics-and-thermal-science
0
votes
0
answers
GATE2015-2-53
A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is $100$ $V$. At a spark cycle time of $25$ $μs$, the average power input required is $1$ $kW$. The capacitance (in $μF$) in the circuit is $2.5$ $5.0$ $7.5$ $10.0$
A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is $100$ $V$. At a spark cycle time of $25$ $μs$, the average power input required is $1$ $kW$. The capacitance (in $μF$) in the circuit is $2.5$ $5.0$ $7.5$ $10.0$
asked
Feb 24, 2017
in
Applications
Arjun
24.6k
points
gateme-2015-set2
applications
fluid-mechanics-and-thermal-science
0
votes
0
answers
GATE2015-2-39
The total emissive power of a surface is $500 \: W/ m^2$ at a temperature $T_1$ and $1200 \: W/m^2$ at a temperature $T_2$, where the temperatures are in Kelvin. Assuming the emissivity of the surface to be constant, the ratio of the temperatures $\dfrac{T_1}{T_2}$ is $0.308$ $0.416$ $0.803$ $0.874$
The total emissive power of a surface is $500 \: W/ m^2$ at a temperature $T_1$ and $1200 \: W/m^2$ at a temperature $T_2$, where the temperatures are in Kelvin. Assuming the emissivity of the surface to be constant, the ratio of the temperatures $\dfrac{T_1}{T_2}$ is $0.308$ $0.416$ $0.803$ $0.874$
asked
Feb 24, 2017
in
Applications
Arjun
24.6k
points
gateme-2015-set2
power-engineering
applications
fluid-mechanics-and-thermal-science
0
votes
0
answers
GATE2015-2-18
The Van der Waals equation of state is $(p+\dfrac{a}{v^2})(v-b)=RT$ where $p$ is pressure, $v$ is specific volume, $T$ is temperature and $R$ is characteristic gas constant. The SI unit of $a$ is $J/kg – K $ $m^3/kg$ $m^5/kg-s^2$ $Pa/kg$
The Van der Waals equation of state is $(p+\dfrac{a}{v^2})(v-b)=RT$ where $p$ is pressure, $v$ is specific volume, $T$ is temperature and $R$ is characteristic gas constant. The SI unit of $a$ is $J/kg – K $ $m^3/kg$ $m^5/kg-s^2$ $Pa/kg$
asked
Feb 24, 2017
in
Applications
Arjun
24.6k
points
gateme-2015-set2
applications
fluid-mechanics-and-thermal-science
...