Control & OperationCâu 62 / 120
When downshifting, what do you do differently compared with upshifting?
a.You skip neutral entirely
b.While in neutral with the clutch released, you press the accelerator to raise engine rpm before selecting the lower gear
c.You hold the clutch down through the whole shift
d.You apply the service brakes throughout the shift
Giải thích
A lower gear turns faster at the same road speed, so engine speed must be increased in neutral to match it. Skipping neutral, riding the clutch, or braking through the shift prevents the speeds from matching and can damage the transmission.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Which sequence describes double clutching to shift into a higher gear?
- You are approaching a steep downgrade in a truck with a manual transmission. When should you select your gear?
- How do you know when to shift using engine speed?
- You need to back into a tight dock space and you have a choice of approach. What should you do?
- What does the safe-backing practice known as GOAL stand for and require?
- You are backing a trailer and it begins to drift off your intended line. What is the correct correction?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với Commercial Driver's License (CDL) General Knowledge Test · Quy trình kiểm tra