Question

when the piston reaches its lowest point in the cylinder, what position is the piston said to be in?
a. top dead center
b. bottom dead center
c. lowest stroke point
d. stroke position

Explanation:

To solve this, we analyze each option:

• Option a: Top dead center is the highest point of the piston, not the lowest. Eliminate.
• Option b: Bottom dead center is defined as the piston's lowest point in the cylinder. This matches the question.
• Option c: "Lowest stroke point" is not the standard term for this position. Eliminate.
• Option d: "Stroke position" is a general term and not specific to the lowest point. Eliminate.

Answer:

b. Bottom dead center