CLASSIFICATION OF VEHICLE AND ENGINE - Practice Mode

1) How the AC mechanical pump's fuel delivery pressure is determined?

Spring pressure on diaphragm Maximum stroke of diaphragm Size of the pumping chamber Maximum deflection of diaphragm

Correct Answer: Maximum stroke of diaphragm

Explanation:

2) What is the purpose of needle valve in carburetor?

Decrease the fuel pressure Excess supply of fuel at idle Always holds correct level of fuel Controls the air flow of the engine

Correct Answer: Always holds correct level of fuel

Explanation:

Power is the rate of doing work or workdone per unit time. In S.I. system of units, the unit of power is watt (briefly written as W) which is equal to 1 N-m/s or 1 J/s.

Generally a bigger unit of power called kilowatt (briefly written as kW) is used which is equal to 1000 W.

3) What is the purpose of throttle valve in the carburetor?

Filter the fuel Always holds correct fuel Excess supply of fuel at idle Controls air fuel mixture into the engine

Correct Answer: Controls air fuel mixture into the engine

4) What is the purpose of accelerating pump circuit?

Provides an economic mixture Provides mixture for low speed Provides mixture for idle speed Provides extra fuel during pick up speed

Correct Answer: Provides extra fuel during pick up speed

Explanation:

Atmospheric pressure: The atmospheric air exerts a normal pressure upon all surfaces with which it is in contact and it is known as atmospheric pressure. Atmospheric pressure is also known as barometric pressure. Barometer is used to measure atmospheric pressure.

5) Which device is vaporizing of fuel and mixing it with air in petrol engine?

Tank Fuel filter Carburetor AC fuel pump

Correct Answer: Carburetor

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