USCG USCG Motor
Set 5 • Question #233 of 382
Launch Interactive Practice Room Which of the following actions takes place in the control circuit of an automatically fired auxiliary boiler when the desired steam pressure is obtained?
A
A temperature sensing device opens the circuit breaker in the burner motor.
B
The high limit control secures power to the entire oil firing system.
✓ Correct Answer
C
The stack relay actuates the low limit control which breaks the ignition circuit.
D
The stack relay secures power to the high voltage side of the ignition transformer.
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'Which of the following actions takes place in the control circuit of an automatically fired auxiliary boiler when the desired steam pressure is obtained', the correct operational principle is: 'The high limit control secures power to the entire oil firing system.'.
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