During the Four-Stroke Cycle, Which Event Is LEAST-Likely to Occur

question 25

Multiple Choice

During the four-stroke cycle, which event is LEAST-Likely to occur during the power stroke?

• A) The piston moves back up, forcing any remaining exhaust gas from the cylinder through the open exhaust valve.
• B) The burning fuel expands rapidly.
• C) The piston moves back down in the cylinder.
• D) The exhaust valve opens as the piston approaches the bottom of its travel.

---

Definitions:

Mandible

The lower jawbone, which is the largest and strongest bone of the face and holds the lower teeth.

Squamous Suture

A cranial suture located between the parietal and temporal bones of the skull.

Temporal Bone

A paired bone located at the sides and base of the skull, playing a key role in protecting the brain and supporting the facial structures.

Parietal Bone

One of the two bones forming the sides and roof of the cranium.