Find the work done by a petrol engine on combustion of 1 kg petrol. The efficiency of the engine is 30% and calorific value of petrol is 47 MJ `kg^(-1).`

Calculate the amount of energy wasted on combustion of 2 kg of diesel in a diesel engine of efficiency 40% The calorific value of diesel is 44,800 kJ//kg .

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)

Incomplete combustion of petrol or diesel in automobile engine produces

Incomplete combustion of petrol or diesel in automobile engine produces

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.

The heat absorbed by a carnot engine from the source in each cycle is 500 J and the efficiency of the engine is 20%. Calculate the work done in each cycle ?

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

60 MJ energy is produced on combustion of 2 kg of coal. Find how much energy is produced on burning 0.5 kg of coal. Also find the calorific value of coal.