09. Heat Engine, Carnot’s Cycle and Refrigeration (COP)
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Thermodynamics

148530 A Carnot engine used first an ideal mono atomic gas and then an ideal diatomic gas. If the source and sink temperature are $410^{\circ} \mathrm{C}$ and $69^{\circ} \mathrm{C}$ respectively and the engine extract $1000 \mathrm{~J}$ of heat in each cycle, then area enclosed by P-V diagram is

1 $100 \mathrm{~J}$
2 $300 \mathrm{~J}$
3 $500 \mathrm{~J}$
4 $700 \mathrm{~J}$
UPSEE - 2010
Thermodynamics

148532 An ideal heat engine exhausting heat at $27^{\circ} \mathrm{C}$ is to have $25 \%$ efficiency. It must take heat at

1 $127^{\circ} \mathrm{C}$
2 $227^{\circ} \mathrm{C}$
3 $327^{\circ} \mathrm{C}$
4 None of these
UPSEE - 2008
Thermodynamics

148533 An ideal refrigerator has a freezer at a temperature of $-13^{\circ} \mathrm{C}$. The coefficient of performance of the engine is 5 . The temperature of the air (to which heat is rejected will be

1 $325^{\circ} \mathrm{C}$
2 $325^{\circ} \mathrm{K}$
3 $39^{\circ} \mathrm{C}$
4 $320^{\circ} \mathrm{C}$
UPSEE - 2008
Thermodynamics

148534 An engine is supposed to operate between two reservoirs at temperature $727^{\circ} \mathrm{C}$ and $227^{\circ} \mathrm{C}$. The maximum possible efficiency of such an engine is :

1 $1 / 2$
2 $1 / 4$
3 $3 / 4$
4 1
UPSEE - 2005
NEET DIGITAL LIBRARY
Thermodynamics

148530 A Carnot engine used first an ideal mono atomic gas and then an ideal diatomic gas. If the source and sink temperature are $410^{\circ} \mathrm{C}$ and $69^{\circ} \mathrm{C}$ respectively and the engine extract $1000 \mathrm{~J}$ of heat in each cycle, then area enclosed by P-V diagram is

1 $100 \mathrm{~J}$
2 $300 \mathrm{~J}$
3 $500 \mathrm{~J}$
4 $700 \mathrm{~J}$
UPSEE - 2010
Thermodynamics

148532 An ideal heat engine exhausting heat at $27^{\circ} \mathrm{C}$ is to have $25 \%$ efficiency. It must take heat at

1 $127^{\circ} \mathrm{C}$
2 $227^{\circ} \mathrm{C}$
3 $327^{\circ} \mathrm{C}$
4 None of these
UPSEE - 2008
Thermodynamics

148533 An ideal refrigerator has a freezer at a temperature of $-13^{\circ} \mathrm{C}$. The coefficient of performance of the engine is 5 . The temperature of the air (to which heat is rejected will be

1 $325^{\circ} \mathrm{C}$
2 $325^{\circ} \mathrm{K}$
3 $39^{\circ} \mathrm{C}$
4 $320^{\circ} \mathrm{C}$
UPSEE - 2008
Thermodynamics

148534 An engine is supposed to operate between two reservoirs at temperature $727^{\circ} \mathrm{C}$ and $227^{\circ} \mathrm{C}$. The maximum possible efficiency of such an engine is :

1 $1 / 2$
2 $1 / 4$
3 $3 / 4$
4 1
UPSEE - 2005
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Thermodynamics

148530 A Carnot engine used first an ideal mono atomic gas and then an ideal diatomic gas. If the source and sink temperature are $410^{\circ} \mathrm{C}$ and $69^{\circ} \mathrm{C}$ respectively and the engine extract $1000 \mathrm{~J}$ of heat in each cycle, then area enclosed by P-V diagram is

1 $100 \mathrm{~J}$
2 $300 \mathrm{~J}$
3 $500 \mathrm{~J}$
4 $700 \mathrm{~J}$
UPSEE - 2010
Thermodynamics

148532 An ideal heat engine exhausting heat at $27^{\circ} \mathrm{C}$ is to have $25 \%$ efficiency. It must take heat at

1 $127^{\circ} \mathrm{C}$
2 $227^{\circ} \mathrm{C}$
3 $327^{\circ} \mathrm{C}$
4 None of these
UPSEE - 2008
Thermodynamics

148533 An ideal refrigerator has a freezer at a temperature of $-13^{\circ} \mathrm{C}$. The coefficient of performance of the engine is 5 . The temperature of the air (to which heat is rejected will be

1 $325^{\circ} \mathrm{C}$
2 $325^{\circ} \mathrm{K}$
3 $39^{\circ} \mathrm{C}$
4 $320^{\circ} \mathrm{C}$
UPSEE - 2008
Thermodynamics

148534 An engine is supposed to operate between two reservoirs at temperature $727^{\circ} \mathrm{C}$ and $227^{\circ} \mathrm{C}$. The maximum possible efficiency of such an engine is :

1 $1 / 2$
2 $1 / 4$
3 $3 / 4$
4 1
UPSEE - 2005
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Thermodynamics

148530 A Carnot engine used first an ideal mono atomic gas and then an ideal diatomic gas. If the source and sink temperature are $410^{\circ} \mathrm{C}$ and $69^{\circ} \mathrm{C}$ respectively and the engine extract $1000 \mathrm{~J}$ of heat in each cycle, then area enclosed by P-V diagram is

1 $100 \mathrm{~J}$
2 $300 \mathrm{~J}$
3 $500 \mathrm{~J}$
4 $700 \mathrm{~J}$
UPSEE - 2010
Thermodynamics

148532 An ideal heat engine exhausting heat at $27^{\circ} \mathrm{C}$ is to have $25 \%$ efficiency. It must take heat at

1 $127^{\circ} \mathrm{C}$
2 $227^{\circ} \mathrm{C}$
3 $327^{\circ} \mathrm{C}$
4 None of these
UPSEE - 2008
Thermodynamics

148533 An ideal refrigerator has a freezer at a temperature of $-13^{\circ} \mathrm{C}$. The coefficient of performance of the engine is 5 . The temperature of the air (to which heat is rejected will be

1 $325^{\circ} \mathrm{C}$
2 $325^{\circ} \mathrm{K}$
3 $39^{\circ} \mathrm{C}$
4 $320^{\circ} \mathrm{C}$
UPSEE - 2008
Thermodynamics

148534 An engine is supposed to operate between two reservoirs at temperature $727^{\circ} \mathrm{C}$ and $227^{\circ} \mathrm{C}$. The maximum possible efficiency of such an engine is :

1 $1 / 2$
2 $1 / 4$
3 $3 / 4$
4 1
UPSEE - 2005
NEET DIGITAL LIBRARY