useful energy output of an engine is 1.75 x 10^3kJ and the total mechanical engery input is 4.00 x 10^3kJ. The efficiency of engine is

Answer 1

To calculate the efficiency of the engine, we can use the formula:

Efficiency = (Useful energy output / Total mechanical energy input) * 100

Given the following values:

Useful energy output = 1.75 x 10^3 kJ
Total mechanical energy input = 4.00 x 10^3 kJ

Plugging these values into the formula:

Efficiency = (1.75 x 10^3 kJ / 4.00 x 10^3 kJ) * 100

Simplifying the equation:

Efficiency = (0.4375) * 100

Calculating the product:

Efficiency = 43.75%

Therefore, the efficiency of the engine is 43.75%.