Internal Combustion Engines Quiz

Which of the following best describes the combustion process in an internal combustion engine?

• The process of mixing air and fuel outside the engine to create power.

• The process of burning air and fuel inside the engine to create power.

• The process of cooling air and fuel inside the engine to create power.

• The process of compressing air and fuel outside the engine to create power.

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DOK Level 2: Skill/Concept

What is the primary function of the piston in an internal combustion engine?

• To mix the air and fuel.

• To ignite the air-fuel mixture.

• To convert the energy from combustion into mechanical work.

• To cool the engine.

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DOK Level 2: Skill/Concept

Which of the following is an advantage of internal combustion engines over external combustion engines?

• Higher thermal efficiency.

• Lower emissions.

• Simpler design and construction.

• Greater fuel flexibility.

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DOK Level 2: Skill/Concept

In a four-stroke internal combustion engine, what happens during the compression stroke?

• The air-fuel mixture is ignited.

• The exhaust gases are expelled.

• The air-fuel mixture is compressed.

• The piston moves down to draw in the air-fuel mixture.

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DOK Level 2: Skill/Concept

Which of the following statements correctly explains why internal combustion engines are widely used in vehicles?

• They have a higher power-to-weight ratio compared to external combustion engines.

• They produce no emissions.

• They require no maintenance.

• They operate at lower temperatures.

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DOK Level 2: Skill/Concept

Under BSVI norms the emission level of Nitrogen oxide is reduced to _______________