Second Law of Thermodynamics and Carnot Engine
« Previous Topic: Refrigerators and Heat Pumps Next Topic: Specific Heat and Molar Heat Capacities »
NEET DIGITAL LIBRARY
PHXI12:THERMODYNAMICS

371380 A Carnot engine is operating between temperatures \(800\;K\) and \(300\;K\). Now the temperature of source is decreased by \(200\;K\). What should be the new temperature of sink so that the efficiency of the engine is reduced by \(25\,\% \) ?

1 \(275.5\;K\)
2 \(318.75\;K\)
3 \(305\;K\)
4 \(250.75\;K\)
PHXI12:THERMODYNAMICS

371381 An ideal gas heat engine operates in a Carnot's cycle between \(227^\circ C\) and \(127^\circ C\). It absorbs \(6 \times {10^4}\;J\) at high temperature. The amount of heat converted into work is:

1 \(4.8 \times {10^4}\;J\)
2 \(3.5 \times {10^4}\;J\)
3 \(1.6 \times {10^4}\;J\)
4 \(1.2 \times {10^4}\;J\)
PHXI12:THERMODYNAMICS

371382 A carnot freezer takes heat from water at \(0^\circ C\) inside it and rejects it to the room at a temperature of \(27^\circ C\). The latent heat of ice is \(336 \times {10^3}Jk{g^{ - 1}}\). If \(5\;kg\) water at \(0^\circ C\) is converted into ice at \(0^\circ C\) by the freezer, then the energy consumed by the freezer is close to:

1 \(1.51 \times {10^5}\;J\)
2 \(1.68 \times {10^6}\;J\)
3 \(1.71 \times {10^7}\;J\)
4 \(1.67 \times {10^5}\;J\)
JEE - 2016
PHXI12:THERMODYNAMICS

371383 Heat cannot by itself flow from a body at lower temperature to a body at higher temperature is a statement or consequence of

1 Ist law of thermodynamics
2 IInd law of thermodynamics
3 Conservation of momentum
4 Conservation of mass
Join With Us for More Updates
PHXI12:THERMODYNAMICS

371380 A Carnot engine is operating between temperatures \(800\;K\) and \(300\;K\). Now the temperature of source is decreased by \(200\;K\). What should be the new temperature of sink so that the efficiency of the engine is reduced by \(25\,\% \) ?

1 \(275.5\;K\)
2 \(318.75\;K\)
3 \(305\;K\)
4 \(250.75\;K\)
PHXI12:THERMODYNAMICS

371381 An ideal gas heat engine operates in a Carnot's cycle between \(227^\circ C\) and \(127^\circ C\). It absorbs \(6 \times {10^4}\;J\) at high temperature. The amount of heat converted into work is:

1 \(4.8 \times {10^4}\;J\)
2 \(3.5 \times {10^4}\;J\)
3 \(1.6 \times {10^4}\;J\)
4 \(1.2 \times {10^4}\;J\)
PHXI12:THERMODYNAMICS

371382 A carnot freezer takes heat from water at \(0^\circ C\) inside it and rejects it to the room at a temperature of \(27^\circ C\). The latent heat of ice is \(336 \times {10^3}Jk{g^{ - 1}}\). If \(5\;kg\) water at \(0^\circ C\) is converted into ice at \(0^\circ C\) by the freezer, then the energy consumed by the freezer is close to:

1 \(1.51 \times {10^5}\;J\)
2 \(1.68 \times {10^6}\;J\)
3 \(1.71 \times {10^7}\;J\)
4 \(1.67 \times {10^5}\;J\)
JEE - 2016
PHXI12:THERMODYNAMICS

371383 Heat cannot by itself flow from a body at lower temperature to a body at higher temperature is a statement or consequence of

1 Ist law of thermodynamics
2 IInd law of thermodynamics
3 Conservation of momentum
4 Conservation of mass
For More Updates join with Us
PHXI12:THERMODYNAMICS

371380 A Carnot engine is operating between temperatures \(800\;K\) and \(300\;K\). Now the temperature of source is decreased by \(200\;K\). What should be the new temperature of sink so that the efficiency of the engine is reduced by \(25\,\% \) ?

1 \(275.5\;K\)
2 \(318.75\;K\)
3 \(305\;K\)
4 \(250.75\;K\)
PHXI12:THERMODYNAMICS

371381 An ideal gas heat engine operates in a Carnot's cycle between \(227^\circ C\) and \(127^\circ C\). It absorbs \(6 \times {10^4}\;J\) at high temperature. The amount of heat converted into work is:

1 \(4.8 \times {10^4}\;J\)
2 \(3.5 \times {10^4}\;J\)
3 \(1.6 \times {10^4}\;J\)
4 \(1.2 \times {10^4}\;J\)
PHXI12:THERMODYNAMICS

371382 A carnot freezer takes heat from water at \(0^\circ C\) inside it and rejects it to the room at a temperature of \(27^\circ C\). The latent heat of ice is \(336 \times {10^3}Jk{g^{ - 1}}\). If \(5\;kg\) water at \(0^\circ C\) is converted into ice at \(0^\circ C\) by the freezer, then the energy consumed by the freezer is close to:

1 \(1.51 \times {10^5}\;J\)
2 \(1.68 \times {10^6}\;J\)
3 \(1.71 \times {10^7}\;J\)
4 \(1.67 \times {10^5}\;J\)
JEE - 2016
PHXI12:THERMODYNAMICS

371383 Heat cannot by itself flow from a body at lower temperature to a body at higher temperature is a statement or consequence of

1 Ist law of thermodynamics
2 IInd law of thermodynamics
3 Conservation of momentum
4 Conservation of mass
NEET DIGITAL LIBRARY
PHXI12:THERMODYNAMICS

371380 A Carnot engine is operating between temperatures \(800\;K\) and \(300\;K\). Now the temperature of source is decreased by \(200\;K\). What should be the new temperature of sink so that the efficiency of the engine is reduced by \(25\,\% \) ?

1 \(275.5\;K\)
2 \(318.75\;K\)
3 \(305\;K\)
4 \(250.75\;K\)
PHXI12:THERMODYNAMICS

371381 An ideal gas heat engine operates in a Carnot's cycle between \(227^\circ C\) and \(127^\circ C\). It absorbs \(6 \times {10^4}\;J\) at high temperature. The amount of heat converted into work is:

1 \(4.8 \times {10^4}\;J\)
2 \(3.5 \times {10^4}\;J\)
3 \(1.6 \times {10^4}\;J\)
4 \(1.2 \times {10^4}\;J\)
PHXI12:THERMODYNAMICS

371382 A carnot freezer takes heat from water at \(0^\circ C\) inside it and rejects it to the room at a temperature of \(27^\circ C\). The latent heat of ice is \(336 \times {10^3}Jk{g^{ - 1}}\). If \(5\;kg\) water at \(0^\circ C\) is converted into ice at \(0^\circ C\) by the freezer, then the energy consumed by the freezer is close to:

1 \(1.51 \times {10^5}\;J\)
2 \(1.68 \times {10^6}\;J\)
3 \(1.71 \times {10^7}\;J\)
4 \(1.67 \times {10^5}\;J\)
JEE - 2016
PHXI12:THERMODYNAMICS

371383 Heat cannot by itself flow from a body at lower temperature to a body at higher temperature is a statement or consequence of

1 Ist law of thermodynamics
2 IInd law of thermodynamics
3 Conservation of momentum
4 Conservation of mass
Join With Us for More Updates