Coast Guard Exams
Question 24Motor Plants - Assistant Engineer70% to pass

On the indicator card shown in the illustration, lines 'A' and 'B' indicate_______________. Illustration MO-0108

Diagram for question 24
AI Explanation
The correct answer is A) top dead center. On the indicator card shown in the illustration MO-0108, lines 'A' and 'B' indicate the position of the piston at top dead center (TDC). This is the point where the piston reaches its highest position in the cylinder, which is a critical reference point for engine timing and performance. The other answer choices are incorrect because they do not accurately describe the information provided in the illustration.