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Question

For a single cylinder four-stroke oil engine, indicated power is 15 kW. Calorific value of fuel is 40000 kJ/kg and fuel consumed is 0.001 kg/s. What will be the indicated thermal efficiency?

एकल सिलेंडर चार-स्ट्रोक तेल इंजन के लिए, संकेतित शक्ति 15 किलोवाट है। ईंधन का कैलोरी मान 40000 kJ/kg है और ईंधन की खपत 0.001 kg/s है। संकेतित तापीय दक्षता क्या होगी?

A.

40%

B.

37.5% 

C.

62.5% 

D.

75% 

Answer ( Option B)

37.5% 

Solution

Given :

For 4 stroke engine, 

Indicated power (IP) = 15 kW

Calorific value (CV) = 40000 kJ/kg

Mass flow rate of fuel (mf)= 0.001 kg/s

Now, indicated thermal efficiency,

Hence, the correct option is (B).

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