One molecule of oxygen is __________ times heavier than the hydrogen atom.

According to Regnault's law, the specific heat at constant pressure (c_p) and specific heat at constant volume (c_v) __________ with the change in pressure and temperature of the gas.

To ensure complete and rapid combustion of a fuel, some quantity of air, in excess of the theoretical or minimum air is supplied.

The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

The efficiency of the dual combustion cycle for the same compression ratio, is __________ Diesel cycle.