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Even Carnot engine cannot give 100% effi...

Even Carnot engine cannot give `100%` efficiency because we cannot

A

prevent radiation

B

find ideal sources

C

reach absolute zero temperature

D

eliminate friction

Text Solution

Verified by Experts

The correct Answer is:
C
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Even carnot heat engine cannot give 100% efficiency. Explain why OR can you design a heat engine of 100% efficiency? Explain ypur answer. OR A heat engine with 100% efficiency is only a theoretical possibility. Explain.

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Knowledge Check

  • Efficiency of Carnot engine is 100% if

    A
    `T_(2) = 273 K`
    B
    `T_(2) = 0 K`
    C
    `T_(1) = 273 K`
    D
    `T_(1) = 0 K`

  • Assertion: The efficiency of a carnot engine cannot be 100% . Reason: This is because sink of heat engine cannot be maintained at 0 K .

    A
    If both, Assertion and Reason are true and Reason is the correct explanation of the Asserrion.
    B
    If both,Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
    C
    If Assertion is true but the Reason is false.
    D
    If both, Assertion and Reason are false.

  • A fritionless heat engine can be 100% efficient only if its exhaust temperature is

    A
    Equal to its input temperature
    B
    Less than its input temperature
    C
    0 K
    D
    `0^@C`

    • Similar Questions

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    Why can't a machine be 100% efficient?

    A carnot engine has an efficiency of 30% .Its efficiency is to be increased to 50% .By what must the temperature (in K) of the source be increased if the sink is at 300K ?

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

    Efficiency of a Carnot's engine is 100% when

    Assertion: Efficiency of a heat engine can't be greater than efficiency of Carnot engine. Reason: Effieciency of any engine is never 100%

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