A turbine takes in 1 000-K steam and exhausts the steam at a temperature of 500 K.What is the maximum theoretical efficiency of this system?

Question

Quizplus · Accepted Answer

To calculate the maximum theoretical efficiency of the turbine, we need to use the Carnot efficiency formula:

Efficiency = 1 - (T_low / T_high)

Where T_low is the temperature of the exhaust steam and T_high is the temperature of the steam entering the turbine.

In this case, T_high = 1000 K and T_low = 500 K.

Therefore, Efficiency = 1 - (500/1000) = 1 - 0.5 = 0.5 or 50%.

So the best choice is C) 50%.

A Turbine Takes in 1 000-K Steam and Exhausts the Steam