A petrol engine consume 25 kg of petrol per hour. The calorific value of petro lis `11.4xx 10^(6)` cal `kg^(-1)`. The power of the engine is 99.75 kW. Calculate the efficiency of the engine.

An engine consumes 20 kg of fuel per hour. The calorific value of the fuel is 12 Kcal g^(-1). Calculate the efficiency of the engine if the power of the engine is 42 kW.

In a petrol engine,the rate of production of heat due to the combustion of petrol is 7.46xx10^(5) cal h^(-1) . The efficiency of the engine is 30%. Calculate the horse power of the engine, if J is 4.2xx10^(7) erg cal^(-1)

In a petrol engine, the rate of production of heat due to combustion of the fuel is 5xx10^(6) cal h^(-1) . The efficiency of the engine is 30%. Calculate the H.P. of the engine. Given, J=4.2 J cal^(-1) and 1 h.p. =746 W.

A motor cycle engine delivers a power of 10 kW , by consuming petrol at the rate of 2.4 kg//hour . If the calorific value of petrol is 35.5 MJ//kg , the rate of heat rejection by the exhaust by

In a heat engine , the temperature of the source and sink are 500 K and 375 K . If the engine consumes 25 xx 10^5 J per cycle, find the efficiency of the engine.