1.

What is the overall efficiency of the thermal plant?

A. The ratio of heat equivalent of electrical output to the heat of combustion of coal.
B. The ratio of heat of combustion of coal to the heat equivalent of electrical output.
C. The ratio of heat equivalent of mechanical energy transmitted to the turbine shaft to the heat of combustion of coal.
D. The ratio of heat of combustion of coal to the heat equivalent of mechanical energy transmitted to the turbine shaft.
Answer» B. The ratio of heat of combustion of coal to the heat equivalent of electrical output.


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