Brakes (A5)Câu 61 / 120
A proportioning valve in the brake system is designed to:
a.Reduce pressure to the rear brakes to prevent early lockup
b.Increase pressure to the front only
c.Store extra brake fluid
d.Operate the parking brake
Giải thích
Because weight shifts forward during braking, the proportioning valve limits rear brake pressure to keep the rear wheels from locking prematurely. This maintains stability during hard stops. Many vehicles now handle this function electronically through ABS/EBD.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Technician A says a grinding, metal-on-metal noise during braking indicates friction material worn past its limit. Technician B says continued driving in that condition can score the rotor or drum. Who is correct?
- A rear disc parking brake that will not hold is often caused by:
- A brake caliper that sticks and does not release will most likely cause:
- The metering valve in a combination valve is used to:
- When bleeding a conventional hydraulic brake system, the general rule is to bleed:
- Technician A says silicone (DOT 5) and glycol (DOT 3/4) brake fluids can be freely mixed. Technician B says brake fluid type is unimportant. Who is correct?
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