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

During a governor test, cut-out occurs at 126 psi and cut-in at 78 psi. What is correct?

Fail only if the safety valve opens Fail, because cut-in must not be below 80 psi Pass, because cut-out is below 145 psi Pass, because 78 psi is close to normal

Correct Answer:

Fail, because cut-in must not be below 80 psi

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