USCG USCG General Eng
Set 5 • Question #378 of 498
Launch Interactive Practice Room Why is the discharge pressure of a herringbone gear pump steadier than the discharge pressure of a simple spur gear pump?
A
Clearance between the gear teeth and casing is smaller.
B
The gear teeth are smaller than those of the simple spur gear pump.
C
One discharge phase begins before the previous discharge phase has been completed.
✓ Correct Answer
D
The herringbone gear pump has four spur gears instead of two.
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Why is the discharge pressure of a herringbone gear pump steadier than the discharge pressure of a simple spur gear pump', the standard operating requirement is: 'One discharge phase begins before the previous discharge phase has been completed.'.
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