Air Brake Practice Test

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Prepare for the Air Brake Test with flashcards and multiple choice questions, each offering hints and explanations. Get set to ace your test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the air compressor governor in charge of?

When air is pumped into the storage tank by the compressor.
Air pressure applied to brakes.
Checking the compressor is in decent working condition or not.
The rpms of the air compressor.

The correct answer is: When air is pumped into the storage tank by the compressor.

The air compressor governor plays a critical role in the operation of the air brake system by controlling when the air compressor pumps air into the storage tank. It monitors the air pressure in the storage tank and activates the compressor when the pressure drops below a predetermined level. Once the air pressure reaches a specified upper limit, the governor stops the compressor to avoid over-pressurization. This function is essential for maintaining the appropriate air pressure for the effective operation of the air brake system and ensuring that the vehicle can function safely. While the other options relate to aspects of air brake operation, they do not accurately define the primary responsibility of the governor. For instance, the governor does not directly apply air pressure to the brakes or check the compressor's mechanical condition; rather, it regulates the air supply to ensure that the system maintains optimal pressure. It also does not control the rpms of the compressor itself; instead, it triggers the compressor to operate based on the air pressure readings.