railway RRB JE (CBT I + CBT II) Mock Test 2024 Internal Combustion Engine Engine Performance Parameter
How is thermal efficiency defined in the context of internal combustion engines?
1
The ratio of indicated power to frictional power losses
2
The ratio of the engine displacement to the fuel mass used
3
The ratio of exhaust gas temperature to the intake air temperature
4
The ratio of useful work output to the total chemical energy input from fuel