InspectionCâu 32 / 60
For a single vehicle (straight truck), what is the maximum allowable air pressure loss in one minute with the brakes applied?
a.1 psi
b.3 psi
c.6 psi
d.10 psi
Giải thích
For a single vehicle, air pressure should not drop more than 3 psi in one minute when the brakes are fully applied and the engine is off. For a combination vehicle, the limit is 4 psi in one minute. A larger loss indicates a leak too big to be safe.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
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- At what pressure should the spring brakes come on automatically during the continued-air-loss test?
- How do you perform the static leakage (applied pressure) test on a straight truck with air brakes?
- With the engine off and brakes released, what is the maximum allowable air leakage per minute for a straight truck?
- How should you test that the service brakes are working before driving?
- How do you test that the parking (spring) brakes hold?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Air Brakes Knowledge Test · Quy trình kiểm tra