USCG USCG Motor
Set 12 • Question #108 of 382
Launch Interactive Practice Room Ethylene glycol, when used as a coolant in a closed cooling system for a diesel engine, is more advantageous than untreated raw water because it __________.
A
provides a constant pH below 7
B
provides better vapor- phase cooling
C
has a higher freezing point and a lower boiling point
D
has a lower freezing point and higher boiling
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'Ethylene glycol, when used as a coolant in a closed cooling system for a diesel engine, is more advantageous than untreated raw water because it', the correct operational principle is: 'has a lower freezing point and higher boiling'.
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