Home
Class 11
PHYSICS
There are two Carnot engines A and B ope...

There are two Carnot engines A and B operating in two different temperature regions. For Engine A the temperatures of the two reservoirs are `150^(@)C` and `100^(@)C`. For engine B the temperatures of the reservoirs are `350^(@)C` and `300^(@)C`. Which engine has lesser efficiency?

Text Solution

Verified by Experts

The efficiency for engine `A=1-(373)/(423)=0.11`. Engine A has `11%` efficiency
The efficiency for engine `B=1-(573)/(623)=0.08`. Engine B has only `8%` efficiency
Promotional Banner

Topper's Solved these Questions

  • HEAT AND THERMODYNAMICS

    FULL MARKS|Exercise TEXTUAL EVALUATION SOLVED (I. Multiple Choice Questions)|13 Videos

  • HEAT AND THERMODYNAMICS

    FULL MARKS|Exercise TEXTUAL EVALUATION SOLVED (II. Short Answer Questions)|48 Videos

  • GRAVITATION

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED (Numerical Problems)|18 Videos

  • KINEMATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED (LONG ANSWER QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

The initial and final temperature of a heat engine are 816^(@)C and 21^(@)C respectively . The percentage efficiency is

The temperature of sink of Carnot engine is 27°C. Efficiency of engine is 25%. Then find the temperature of source.

A Carnot engine converts one-sixth of the heat into work. When the temperature of the sink is reduced by 62°C, the efficiency of the engine is doubled. The temperature of the source and sink are

Three bodies A, B and C are in thermal equilibrium. The temperature of B is 45^@ C. then the temperature of C is

The efficiency of Carnot's engine operating between reservoirs, maintained at temperature 27°C and -123°C is

Suppose a person wants to increase the efficieny of the reversible heat engine that is operating between 100^(@)C and 300^(@)C He had two ways to increase the efficiency . ( a) By decreasing the cold reservoir temperature from 100^(@)C to 50^(@)C and keeping the hot reservoir temperature of the hot reservoir from 300^(@)C to 350^(@)C by keeping the cold reservoir temperature constnat which is the suitable method ?

A carnot engine takes heat from a reservoir at 627^(@)C and rejects heat to a sink at 27^(@)C . Its efficiency is

The temperature is changed from 27^(@)C to 327^(@)C . Find ratio of K.E. of molecules at two temperature.

FULL MARKS-HEAT AND THERMODYNAMICS-ADDITIONAL QUESTIONS SOLVED (Numerical Problems)
  1. There are two Carnot engines A and B operating in two different temper...

    Text Solution

    |

  2. The length of a metal wire is l(1) when the tension in it is T(1) and ...

    Text Solution

    |

  3. A Steel rod of length 25 cm has a cross - sectional area of 0.8cm^(2)....

    Text Solution

    |

  4. The temperature at the bottom of a 40 m deap lake is 12^(@)C and that ...

    Text Solution

    |

  5. A jar 'A' is filled with an ideal gas characterised by parameters P, V...

    Text Solution

    |

  6. By what percentage should the pressure of a given mass of a gas be inc...

    Text Solution

    |

  7. A flask is filled with 13 g of an ideal gas at 27^(@)C and its tempera...

    Text Solution

    |

  8. A rod of metal - 1 of length 50.0 cm elongates by 0.10 cm when it is h...

    Text Solution

    |

  9. A balloon is filled at 27^(@)C and 1 atm pressure by 500m^(3) He. Then...

    Text Solution

    |

  10. During an experiment an ideal gas is found to obey an additional law V...

    Text Solution

    |

  11. Two vessels separately contain two ideal gases A and B at the same tem...

    Text Solution

    |

  12. For a gas the difference between the two specific heates is 4150 J/Kg ...

    Text Solution

    |

  13. A mass of ideal gas at pressure P is expanded isothermally to four tim...

    Text Solution

    |

  14. A carnot engine operating between temperature T(1) andT(2) has efficie...

    Text Solution

    |

  15. A perfect gas goes from state A to state B by absorbing 8xx10^(5)J of ...

    Text Solution

    |

  16. A Carnot engine having an efficiency of eta = (1 / 10) as a heat engin...

    Text Solution

    |

  17. An ideal gas compressed to half its initial volume by means of several...

    Text Solution

    |