2.1. A water hammer is a phenomenon caused by the sudden increase or decrease in fluid velocity which results in pressure fluctuations in a pipe. A common cause of the water hammer is rapid closure of a valve in a pipeline. In order to minimise the pressure rise, the closure time of the valve needs to be increased. If a pipe (K = 18.9 x 105 kPa) is laid for a distance of 1500 m, which of the following would be considered a gradual valve closure time? (a) 1.3 seconds (b) 5 seconds (c) 2.18 seconds (d) All of the above 2.2. hich of the following is considered a minor friction loss in pipe system? (a) Slight changes in elevation (b) Shock losses due to a pipe contraction (c) Head loss due to pipe friction (d) Head loss when the fluid passes through a valve
2.1. A water hammer is a phenomenon caused by the sudden increase or decrease in fluid velocity which results in pressure fluctuations in a pipe. A common cause of the water hammer is rapid closure of a valve in a pipeline. In order to minimise the pressure rise, the closure time of the valve needs to be increased. If a pipe (K = 18.9 x 105 kPa) is laid for a distance of 1500 m, which of the following would be considered a gradual valve closure time? (a) 1.3 seconds (b) 5 seconds (c) 2.18 seconds (d) All of the above 2.2. hich of the following is considered a minor friction loss in pipe system? (a) Slight changes in elevation (b) Shock losses due to a pipe contraction (c) Head loss due to pipe friction (d) Head loss when the fluid passes through a valve
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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QUESTION 2
2.1. A water hammer is a phenomenon caused by the sudden increase or decrease
in fluid velocity which results in pressure fluctuations in a pipe.
A common cause of the water hammer is rapid closure of a valve in a
pipeline. In order to minimise the pressure rise, the closure time of the
valve needs to be increased. If a pipe (K = 18.9 x 105 kPa) is laid for a
distance of 1500 m, which of the following would be considered a gradual
valve closure time?
(a) 1.3 seconds
(b) 5 seconds
(c) 2.18 seconds
(d) All of the above
2.2. hich of the following is considered a minor friction loss in pipe system?
(a) Slight changes in elevation
(b) Shock losses due to a pipe contraction
(c) Head loss due to pipe friction
(d) Head loss when the fluid passes through a valve.
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