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NFPA Exam CFPS Topic 1 Question 9 Discussion

Actual exam question for NFPA's CFPS exam
Question #: 9
Topic #: 1
[All CFPS Questions]

For engine driven emergency power supplies, which of the following devices maintains a relatively constant speed of the prime mover throughout the full power output range by varying the fuel input to the prime mover?

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Suggested Answer: C

. Governor

For engine driven emergency power supplies, the device that maintains a relatively constant speed of the prime mover throughout the full power output range by varying the fuel input to the prime mover is the governor. A governor is a device that automatically regulates the speed or power of an engine or other prime mover by adjusting the amount of fuel supplied to it. A governor senses the speed of the prime mover and compares it with a desired set point, and then controls the fuel valve to increase or decrease the fuel flow accordingly. By doing so, the governor ensures that the prime mover operates within a narrow range of speed or power, regardless of the load or other factors that may affect its performance12


by Valda at Apr 04, 2025, 08:48 AM

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Kip
19 days ago
C) Governor. It's like the engine's personal trainer, making sure it doesn't overdo it.
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Kimbery
1 months ago
I'm not sure, but I think it's either A) Generator or C) Governor.
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Vicki
1 months ago
The governor, of course. Wouldn't want my engine to go wild and start dancing, would I?
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Derick
2 days ago
Without the governor, the engine could potentially run out of control and cause damage.
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Joesph
7 days ago
It's important for the governor to regulate the fuel input to prevent the engine from running too fast.
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Olga
13 days ago
Yes, the governor is responsible for maintaining a constant speed of the prime mover.
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Jose
1 months ago
I agree with Laquanda, the governor is responsible for maintaining a constant speed.
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Alita
1 months ago
C) Governor! Gotta love a good governor keeping that prime mover in check.
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Lynelle
7 days ago
B) Distributor
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Sol
27 days ago
A) Generator
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Laquanda
1 months ago
I think the answer is C) Governor.
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