Air Brake (Q Endorsement) Practice · Question
Which component is responsible for sensing the air pressure in the supply tank and controlling when the air compressor pumps air into the system?
The governor is the control unit of the air compressor. It monitors the air pressure in the primary (supply) reservoir and signals the compressor to cut in (sta
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Question: Which component is responsible for sensing the air pressure in the supply tank and controlling when the air compressor pumps air into the system?
Answer options:
- Relay valve
- Slack adjuster ✅ Governor
- Foot valve
Correct answer: Governor
Explanation: The governor is the control unit of the air compressor. It monitors the air pressure in the primary (supply) reservoir and signals the compressor to cut in (start pumping) when pressure drops below a set minimum and cut out (stop pumping) when it reaches a set maximum.
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