Home
Class 12
PHYSICS
An ideal heat engine exhausting heat at ...

An ideal heat engine exhausting heat at `77^(@)` is to have a 30% efficiency. It must take heat at

A

127ºC

B

227ºC

C

327ºC

D

673ºC

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • Thermodynamics

    MOTION|Exercise EXERCISE - 2|40 Videos

  • Thermodynamics

    MOTION|Exercise EXERCISE - 3 SECTION - A|49 Videos

  • Thermodynamics

    MOTION|Exercise Solved Example|10 Videos

  • SURFACE TENSION & VISCOSITY

    MOTION|Exercise Exercise - 4 | Level-II Previous Year | JEE Advanced|12 Videos

  • UNIT & DIMENSIONS

    MOTION|Exercise Exercise - 4 (Level - II) (PREVIOUS YEAR JEE ADVANCED)|10 Videos

Similar Questions

Explore conceptually related problems

An ideal heat engine working between temperature T_(H) and T_(L) has efficiency eta . If both the temperature are raised by 100 K each the new efficiency of heat engine will be

An ideal heat engine working between temperature T_(1) and T_(2) has an efficiency eta , the new efficiency if both the source and sink temperature are doubled, will be

For an ideal heat engine, the temperature of the source is 127^(@)C . In order to have 60% efficiency the temperature of the sink should be _____ ""^(@)C . (Round off to the Nearest Integer)

For a heat engine the temperature of the source is 127^(@)C .To have 60% efficiency the temperature of the sink is

An ideal heat engine can be 100% efficient if its sink is at

What percentage T_(1) is of T_(2) for a 10% efficiency of a heat engine?

The efficiency of a Carnot heat engine

An ideal Carnot heat engine with an efficiency of 30% . It absorbs heat from a hot reservoir at 727^(@)C . The temperature of the cold reservoir is

An ideal Carnot's engine whose efficiency 40% receives heat of 500K. If the efficiency is to be 50% then the temperature of sink will be

MOTION-Thermodynamics-EXERCISE - 1
  1. The amount of heat required to raise the temperature of a diatomic gas...

    Text Solution

    |

  2. A gas of given mass, is brought from stage A to B along three paths 1,...

    Text Solution

    |

  3. The indicator diagrams representing minimum and maximum amounts of wor...

    Text Solution

    |

  4. A fixed mass of gas undergoes the cycle of changes represented by PQRS...

    Text Solution

    |

  5. Consider the process on a system shown in figure. During the process, ...

    Text Solution

    |

  6. An ideal system can be brought from stage A to B through four paths as...

    Text Solution

    |

  7. Ideal gas is taken through process shown in figure

    Text Solution

    |

  8. Four curves A, B, C and D are drawn in Fig. for a given amount of gas....

    Text Solution

    |

  9. In reference of above figure, no heat exchange between the gas and the...

    Text Solution

    |

  10. Two curves are given at temperatures T(1) and T(2) in an isothermal pr...

    Text Solution

    |

  11. Three curves are shown in the P-V diagram. P, Q and R represent the pr...

    Text Solution

    |

  12. The cyclic process for 1 mole of an ideal gas is shown in the V-T diag...

    Text Solution

    |

  13. A certain mass of an ideal gas is at pressure P(1) and volume V(1). If...

    Text Solution

    |

  14. A thermodynamics cycle takes in heat energy at a high temperature and ...

    Text Solution

    |

  15. An ideal gas heat engine operates in Carnot cycle between 227^(@)C and...

    Text Solution

    |

  16. An ideal heat engine exhausting heat at 77^(@) is to have a 30% effici...

    Text Solution

    |

  17. A Carnot engine, whose sink is at 300 K, has an efficiency of 40%. By ...

    Text Solution

    |

  18. Two steam engines 'A' and 'B', have their sources respectively at 700K...

    Text Solution

    |

  19. Two steam engines 'A' and 'B', have their sources respectively at 700K...

    Text Solution

    |

  20. A Carnot engine working between K 300 and 600 K has work output of 800...

    Text Solution

    |