System PartsCâu 1 / 60
What is the purpose of the air compressor in an air brake system?
a.To release the parking brakes automatically
b.To pump air into the air storage tanks
c.To warn the driver of low air pressure
d.To apply the service brakes evenly
Giải thích
The air compressor pumps air into the storage tanks (reservoirs) that hold the compressed air used for braking. It is usually connected to the engine by gears or a belt. Without it, the system could not build or maintain the air pressure the brakes need to work.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What does the air compressor governor control?
- At about what pressure does the governor typically cut out the compressor from pumping air?
- Why do air storage tanks have a drain valve at the bottom?
- What is the danger of water collecting in the air storage tanks?
- What is the function of the S-cam in a drum air brake?
- Spring brakes on a truck are held in the released position by what?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Air Brakes Knowledge Test · Quy trình kiểm tra