Question

A thermal power plant has an efficiency of 0.4. If 0.6 kg of coal is burnt to generate 1 kWh, the calorific value of coal is

a.

about 3500 kcal/kg

b.

about 2500 kcal/kg

c.

about 1500 kcal/kg

d.

about 7500 kcal/kg

Answer: (a).about 3500 kcal/kg

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Q. A thermal power plant has an efficiency of 0.4. If 0.6 kg of coal is burnt to generate 1 kWh, the calorific value of coal is

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