USCG USCG Motor
Set 5 • Question #255 of 382
Launch Interactive Practice Room In a unit injector, an upper helix and lower helix are machined in the lower part of the plunger for___________.
A
facilitating plunger rotation
B
positioning the control sleeve
C
accurate metering of the fuel oil
✓ Correct Answer
D
eliminating injection lag
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'In a unit injector, an upper helix and lower helix are machined in the lower part of the plunger for', the correct operational principle is: 'accurate metering of the fuel oil'.
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