Question -
Answer -
Given
Work done by the steam engine per minute, W = 5.4 x 108 J
Heat supplied from the boiler, H = 3.6 x 109 J
Efficiency of the engine = Output Energy / Input Energy
Hence,
η = W / H
= 5.4 x 108 /(3.6 x 109)
On simplification, we get,
= 0.15
Therefore, the percentage efficiency of the engine is 15%
Amount of heat wasted = 3.6 x 109 –5.4 x 108
We get,
= 30.6 x 108
= 3.06 x 109 J
Hence, the amount of heat wasted per minute is 3.06 x 109 J