Understanding the 4 Stroke Cycle

What is the first stroke in a four-stroke engine cycle?

• Compression

• Intake

• Power

• Exhaust

During which stroke of the four-stroke cycle does the piston move upwards and compress the air-fuel mixture?

• Intake

• Compression

• Power

• Exhaust

In a four-stroke engine, what is the primary purpose of the power stroke?

• To expel exhaust gases

• To draw in air-fuel mixture

• To ignite the air-fuel mixture and produce power

• To compress the air-fuel mixture

Which component of a four-stroke engine is responsible for opening and closing the intake and exhaust valves?

• Crankshaft

• Camshaft

• Piston

• Spark plug

What is the typical temperature range for the combustion process in a four-stroke engine?

• 100-200°C

• 200-400°C

• 500-700°C

• 700-1500°C

How many complete revolutions of the crankshaft occur in one complete four-stroke cycle?

• 1

• 2

• 3

• 4

What is the function of the exhaust stroke in a four-stroke engine?

• To compress the air-fuel mixture

• To ignite the air-fuel mixture

• To expel burnt gases from the cylinder

• To draw in fresh air-fuel mixture

Which of the following is NOT a part of the four-stroke cycle?

• Intake

• Compression

• Ignition

• Exhaust

What is the typical displacement volume of a small car engine in cubic centimetres (cc)?

• 500-1000 cc

• 1000-2000 cc

• 2000-3000 cc

• 3000-4000 cc

In a four-stroke engine, what is the role of the spark plug?

• To compress the air-fuel mixture

• To ignite the air-fuel mixture

• To expel exhaust gases

• To open and close the valves