Home
Class 11
PHYSICS
An engine is supposed to operate between...

An engine is supposed to operate between two reservoirs at temperature `727^(@)C` and `227^(@)C`. The maximum possible efficiency of such an engine is

A

1/2

B

1/4

C

3/4

D

1

Text Solution

Verified by Experts

The correct Answer is:
A
`eta=1-(T_2)/(T_1)=1-((273+227))/((273+727))=1-1/2=1/2`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ERRORLESS|Exercise PAST YEARS QUESTIONS|22 Videos

  • THERMODYNAMICS

    ERRORLESS|Exercise ASSERTION AND REASON|20 Videos

  • THERMODYNAMICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (ISOBARIC AND ISOCHORIC PROCESS)|10 Videos

  • SURFACE TENSION

    ERRORLESS|Exercise ASSERTION & REASON|11 Videos

  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS|Exercise ASSERTION & REASON|10 Videos

Similar Questions

Explore conceptually related problems

The maxium possible efficiency of a heat engine is

A Carnot engine operates between 200^(@)C and 20^(@)C . Its maximum possible efficiency is:

A cannot engine operates between two reservoirs of temperature T_(1) and T_(2) .The efficiency of engine is 25 %. The engine performs 100 J of work percycle. The heat energy (in J) delivered by the engine to the low temperature reservoir in a cycle is _______

A Carnot engine works between temperature 0^(@)C and 100^(@)C . Calculate its efficiency.

4) A heat engine operates in a carrot cycle between a source at a temperature of 227C and a sink at a temperature of 27C.What is the maximum efficiency of such an engine? (A) 20%(B) 40% (C) 60% (D) 80%

A Carnot's engine is made to work between 200^(@)C and 0^(@)C first and then between 0^(@)C and -200^(@)C . The ratio of efficiencies of the engine in the two cases is

If a carnot engine works between 127^(@)C and 527^(@)C then its efficiency is

An ideal Carnot's engine works between 227^(@)C and 57^(@)C . The efficiency of the engine will be

A Carnot engine operates between hot and cold reservoirs with temperatures 527^@ C and -73.0^@ C , respectively. If the engine performs 1000.0 J of work per cycle, how much heat is extracted per cycle from the hot reservoir?

ERRORLESS-THERMODYNAMICS-NCERT BASED QUESTIONS (HEAT ENGINE, REFRIGERATOR AND SECOND LAW OF THERMODYNAMICS)
  1. A Carnot engine working between 300 K and 600 K has work output of 800...

    Text Solution

    |

  2. If we consider solar system consisting of the earth and sun only as on...

    Text Solution

    |

  3. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

    Text Solution

    |

  4. In a Carnot engine when T(2) = 0^(@)C and T(1) = 200^(@)C its efficien...

    Text Solution

    |

  5. A scientist says that the efficiency of his heat engine which operates...

    Text Solution

    |

  6. Efficiency of a Carnot engine is 50% when temperature of outlet is 500...

    Text Solution

    |

  7. An ideal heat engine working between temperature T(1) and T(2) has an ...

    Text Solution

    |

  8. An engine is supposed to operate between two reservoirs at temperature...

    Text Solution

    |

  9. A carnot engine has efficiency 1//5 . Efficiency becomes 1//3 when tem...

    Text Solution

    |

  10. An ideal gas is subjected to cyclic process involving four thermodynam...

    Text Solution

    |

  11. A reversible engine converts one-sixth of the heat input into work. Wh...

    Text Solution

    |

  12. An engineer claims to have made an engine delivering 10 kW power with ...

    Text Solution

    |

  13. A Carnot engine whose low temperature reservoir is at 7^(@)C has an ef...

    Text Solution

    |

  14. In the P-V diagram below the dashed curved line is an adiabatic. For a...

    Text Solution

    |

  15. An ideal gas with constant heat capacity C(V)=(3)/(2)nR is made to car...

    Text Solution

    |

  16. If the door of a refrigerator is kept open, then which of the followin...

    Text Solution

    |

  17. In a mechanical refrigerator, the low temperature coils are at a tempe...

    Text Solution

    |

  18. An ideal refrigerator has a freezer at a temperature of -13^(@)C. The ...

    Text Solution

    |

  19. A refrigerator with COP= 1//3 release 200 J at heat to a reservoir. Th...

    Text Solution

    |

  20. Jet aircrafts fly at altitudes above 30,000 ft where the air is very c...

    Text Solution

    |