In a heat engine, if the work output is 200 J and the heat input is 600 J, what

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Question: In a heat engine, if the work output is 200 J and the heat input is 600 J, what is the efficiency?

Options:

Correct Answer: 66.67%

Solution:

Efficiency = (Work output / Heat input) × 100 = (200 J / 600 J) × 100 = 33.33%.

In a heat engine, if the work output is 200 J and the heat input is 600 J, what is the efficiency?

In a heat engine, if the work output is 200 J and the heat input is 600 J, what is the efficiency?

Step 1: Identify the work output of the heat engine, which is given as 200 J.
Step 2: Identify the heat input of the heat engine, which is given as 600 J.
Step 3: Use the efficiency formula: Efficiency = (Work output / Heat input) × 100.
Step 4: Substitute the values into the formula: Efficiency = (200 J / 600 J) × 100.
Step 5: Calculate the fraction: 200 J divided by 600 J equals 0.3333.
Step 6: Multiply the result by 100 to convert it to a percentage: 0.3333 × 100 = 33.33%.
Step 7: Conclude that the efficiency of the heat engine is 33.33%.

Efficiency of Heat Engines – Efficiency is a measure of how much useful work is obtained from the heat energy input, calculated as the ratio of work output to heat input.