MEK Exit Exam • Set 3 Question 15 of 30
Exhaust valve in a Diesel engine ______
✓
Direct Answer
Option D: Opens and closes
The exhaust valve in a diesel engine is a critical component that opens to allow burned exhaust gases to exit the cylinder and closes to seal the combustion chamber during the compression and power strokes. Thus, it must open and close cyclically.
All Options
A
Rotates in place
B
Stays in place
C
Moves up and down
D
Opens and closes
(Correct Answer)
Detailed Explanation & Context
The exhaust valve in a diesel engine is a critical component that opens to allow burned exhaust gases to exit the cylinder and closes to seal the combustion chamber during the compression and power strokes. Thus, it must open and close cyclically.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
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