16.Fuel oil consumption guarantees for I .C. engine are usually based on

17.The fuel in diesel engine is normally injected at pressure of

18.Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?

19.In case of gas turbines, the gaseous fuel consumption guarantees are based on

20.The pressure and temperature at the end of compression stroke in a petrol engine are of the order of