MCQ
Efficiency of a Carnot engine is large when
  • $T _{ H }$ is large
  • B
    $T_C$ is low
  • C
    $T _{ H }- T _{ C }$ is large
  • D
    $T _{ H }- T _{ C }$ is small

Answer

Correct option: A.
$T _{ H }$ is large
$T _{ H }$ is large
$T_C$ is low
$T _{ H }- T _{ C }$ is large
$\left[\eta=\frac{T_{ H }-T_{ c }}{T_{ H }}=1-\frac{T_{ c }}{T_{ H }}\right]$

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