An engine operating between the boiling and freezing points of wa… - Vidyadip

MCQ

An engine operating between the boiling and freezing points of water will have

$1.$ efficiency more than $27 \%$

$2.$ efficiency less than the efficiency a Carnot engine operating between the same two temperatures.

$3.$ efficiency equal to $27 \%$

$4.$ efficiency less than $27 \%$

A
$2,3$ and $4$ only
B
$2$ and $3$ only
✓
$2$ and $4$ only
D
$1$ and $2$ only

✓

Answer

Correct option: C.

$2$ and $4$ only

c
$\eta=\left(1-\frac{273}{373}\right) \times 100=26.8 \%$

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