Answer: Willian’s line method, Morse test and Motoring test can all be used to find the frictional power in an IC engine.
Frictional power is the difference between Indicated power and Brake power. It incorporates friction losses in the flywheel, governor, oil pump, water pump, and other moving parts. It can be determined by the following methods Willian’s line method, Morse test, and Motoring test.
Willian’s Line Method
It is also known as the fuel rate extrapolation method. To determine the frictional power of an IC engine, a graph is drawn for brake power (kW) on the x-axis and fuel flow rate (kg/hr) on the y-axis on the condition that the engine is running at a constant speed.
This test is used for finding out the indicated power and the mechanical efficiency of a multi-cylinder auto engine is found out in a very short time.
The test in which the engine runs at a constant speed using the motor and the engine is connected to the electric motor is called the Motoring test.
Willian’s line method, Morse test, and Motoring test can all be used to find which of the following for an IC engine.
Out of the given option, Frictional power is the right answer.