The efficiency of a heat engine is defined as the ratio of: (2023)

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Question: The efficiency of a heat engine is defined as the ratio of: (2023)

Options:

Correct Answer: Work done to heat absorbed

Exam Year: 2023

Solution:

The efficiency of a heat engine is defined as the ratio of work done by the engine to the heat absorbed from the hot reservoir.

The efficiency of a heat engine is defined as the ratio of: (2023)

The efficiency of a heat engine is defined as the ratio of: (2023)

Step 1: Understand what a heat engine is. A heat engine is a machine that converts heat energy into work.
Step 2: Identify the two main components of a heat engine: the hot reservoir (where the engine gets heat) and the cold reservoir (where the engine releases some heat).
Step 3: Know that the engine absorbs heat from the hot reservoir. This is the energy input.
Step 4: Learn that the engine does work using the absorbed heat. This is the useful output of the engine.
Step 5: The efficiency of the heat engine is calculated by taking the work done by the engine and dividing it by the heat absorbed from the hot reservoir.
Step 6: Write the formula for efficiency: Efficiency = (Work done by the engine) / (Heat absorbed from the hot reservoir).

Efficiency of a Heat Engine – The efficiency of a heat engine is the measure of how well it converts heat energy from a hot reservoir into work, typically expressed as a ratio.