IrrigationCâu 8 / 100
Water hammer in an irrigation system is BEST reduced by which measure?
a.Increasing water velocity above 10 feet per second
b.Removing all valves
c.Using undersized pipe
d.Keeping velocity below about 5 feet per second and using slow-closing valves
Giải thích
Water hammer is a pressure surge caused by fast-moving water stopping abruptly, often from quick-closing valves. Keeping design velocity at or below about 5 feet per second and using slow-closing solenoid valves reduces the surge. Oversized surges can burst pipe and fittings over time.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A reduced pressure principle (RP) backflow assembly is primarily used to protect a potable water supply against what?
- A pressure vacuum breaker (PVB) must be installed at what minimum height relative to the highest downstream sprinkler head or outlet?
- An atmospheric vacuum breaker (AVB) has which key installation limitation?
- Which pipe material is MOST commonly used for buried irrigation mainlines under constant pressure in California?
- As irrigation pipe diameter decreases while flow stays the same, what happens to friction (pressure) loss?
- A drip emitter rated at 1 GPH means it delivers approximately how much water per hour?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-27 Landscaping Trade Exam · Quy trình kiểm tra