Vehicle InspectionCâu 14 / 120
During the applied-pressure portion of your air-brake test, what does the low-pressure warning coming on at 55 psi tell you?
a.The system is fine because the warning came on below 60 psi
b.The warning device is defective because it must activate at or before 60 psi
c.The governor is set too high
d.The spring brakes are already applied
Giải thích
The warning must activate at or before 60 psi, so a device that waits until 55 psi is out of adjustment and gives the driver too little time to react. It is not evidence of a governor problem, and spring brakes do not apply until roughly 20 to 45 psi.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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