Vehicle InspectionCâu 13 / 120
Why is a leaking exhaust system a serious defect that must be corrected before driving?
a.Exhaust gas including carbon monoxide can enter the cab and poison the driver
b.It always causes the engine to stall at highway speed
c.It automatically triggers the low-air-pressure warning
d.It prevents the transmission from shifting into high gear
Giải thích
Leaking exhaust can allow carbon monoxide and heat into the cab and can ignite nearby fuel or wiring, which is why it must be repaired before operating. Exhaust leaks do not stall the engine on their own, have nothing to do with air-pressure warnings, and do not lock out the transmission.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- While checking the tractor's fifth wheel during your walkaround, what condition tells you the coupling is unsafe?
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- You are inspecting the suspension on a trailer axle and find the main leaf of a leaf spring is broken. What is the correct action?
- During the applied-pressure portion of your air-brake test, what does the low-pressure warning coming on at 55 psi tell you?
- During the static leak test you find air pressure dropping steadily and you can hear a hiss near the trailer air lines. What should you do?
- You start the engine with the air tanks nearly empty and watch the gauge. On a dual air system, roughly how quickly should pressure build from 85 to 100 psi at operating rpm?
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