Water hammer in a pressure pipe is primarily caused by:
Correct answer: A. Sudden change in flow velocity
- A. Sudden change in flow velocity
- B. Gradual pipe enlargement
- C. Steady increase in water temperature
- D. Reduction in atmospheric pressure
Explanation
Water hammer is a pressure surge produced when the velocity of flowing water changes rapidly, such as during sudden valve closure. A gradual change in velocity produces a much smaller transient effect.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Hydraulics and Water Resources
Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
Practise Hydraulics and Water Resources
78 free Hydraulics and Water Resources MCQs from Civil Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Civil Engineering questions like this
Civil Engineering is on 3 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Hydraulics and Water Resources questions
For an open channel, the hydraulic radius is defined as the ratio of:
In a stationary liquid, how does pressure vary with depth below the free surface?
In irrigation soil-water terminology, field capacity is the water content remaining after:
For geometrically similar centrifugal pumps operating at the same speed, which quantity generally increases with impeller diameter?
Which hydraulic turbine is generally suitable for low head and high discharge conditions?
In hydrology, baseflow in a stream is mainly supplied by: