Question

24.
In terms of heat absorbed Q, and heat
rejected Q2, the efficiency of an
engine is defined as:
(A)
Q, +Q)
(B)
Q1 Q2
1-22
(C)
Q1
(D)
​

Answer 1

$\huge\green{Question}$⇒In terms of heat absorbed Q, and heat  rejected , the efficiency of an  engine is defined as:

$\huge\red{answer}$⇒The efficiency of a heat engine (Eff) is defined to be the engine’s net work output W divided by heat transfer to the engine: \text{Eff} = \frac{\text{W}}{\text{Q}_\text{h}} = 1 - \frac{\text{Q}_\text{c}}{\text{Q}_\text{h}}, where Qc and Qh denotes heat transfer to hot (engine) and cold (environment) reservoir.

$\huge\pink{Extra\;Knowledge}$⇒

The efficiency of an automobile engine can be determined by examining the input and output energy. ... Percent efficiency is calculated by comparing the output energy, the kinetic energy is the case of a car, with the input energy, the energy contained within the molecules of the gasoline.

$\huge\orange{@alurringbabe}$