LV21.Q Engines revision

What is the primary function of piston rings in an engine?

• To increase the engine's power output

• To seal the combustion chamber and prevent the escape of combustion gases

• To reduce the engine's weight

• To cool the engine

What does the "S" rating in API classification stand for?

• Diesel

• Petrol

• Kerosene

• Natural Gas

What does the "C" rating in API classification stand for?

• Diesel

• Petrol

• Kerosene

• Natural Gas

What does API stand for in the context of API classification?

• American Petroleum Institute

• Associated Petroleum Industry

• Advanced Petroleum Information

• American Petrol Industry

What does blue smoke from the exhaust typically indicate?

• Oil being burned

• Fuel mixture too rich

• Coolant leak

• Air filter blockage

What is the result of a water and oil mixture in the context of exhaust smoke?

• Combustion

• Emulsification

• Oxidation

• Vaporization

In how many ways does heat travel?

• 2

• 3

• 4

• 5

Through which medium does conduction occur?

• Liquids

• Solids

• Gases

• Plasma

Through which medium does convection occur?

• Solids

• Liquids

• Gases

• Plasma

Through which medium does radiation occur?

• Solids

• Liquids

• Air

• Plasma