Correct answer
Half a revolution of the crankshaft.
Half a revolution: 180 degrees. A stroke is the piston’s movement from top dead centre to bottom dead centre or vice versa. The complete four-stroke cycle requires four strokes and two crankshaft revolutions, 720 degrees. A stroke, a complete cycle and the firing interval between different cylinders are distinct concepts.
Practice more C licence questions
A self-check with exam-style questions on Mechanics and maintenance. Free, no signup.
All options
One revolution of the crankshaft.
Half a revolution of the crankshaft.
Two revolutions of the crankshaft.
Editorial status: editorially approved. This status does not certify legal review. Report a correction
Share this question
Keep studying
Related questions
- By definition, a heated lorry is a motor vehicle that is:
- While driving your lorry, you notice that it veers towards one side of the carriageway only when you press the brake pedal. What could this be due to?
- As a general rule, stopping on urban roads shall be carried out by positioning the vehicle…
- In an electrical diagram with two identical compatible 12 V nominal batteries suitable for series connection, which link gives 24 V nominal between the two free terminals?
- What should I do to drive efficiently?
- If you are driving your lorry downhill, can you put it in neutral to save fuel?