Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam

During a governor test, what helps indicate compressor cut-out on a vehicle with an air dryer?

The spring brake knob changes colour The brake linings become thicker The gauges stop climbing and the air dryer may exhaust The trailer hand valve locks

Correct Answer:

The gauges stop climbing and the air dryer may exhaust

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