Practice question

What is the primary purpose of the one-way check valves located between the wet reservoir and the primary and secondary reservoirs?

To prevent loss of stored air from one reservoir if another reservoir or the supply line fails
To regulate the governor cut-in and cut-out pressures
To exhaust moisture automatically from the wet tank
To balance pressure between the front and rear brake circuits during a stop

Answer: A — To prevent loss of stored air from one reservoir if another reservoir or the supply line fails

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