Fluid Mechanics & Hydraulics (3140611) MCQs

MCQs of Open Channel Flow

Showing 11 to 10 out of 20 Questions
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11.
Calculate the discharge through a channel having a bed slope 1 in 1000, area 12 m2, hydraulic radius of 1.2m and Chezy’s constant being equal to 50.
(a) 17.98 m3s
(b) 18.98 m3s
(c) 19.98 m3s
(d) 20.98 m3s
Answer:

Option (d)

12.
For a channel to be economic which of the following parameters should be minimum.
(a) Wetted perimeter
(b) Wetted area
(c) Section factor
(d) Hydraulic depth
Answer:

Option (a)

13.
Energy per unit weight of water measured with respect to the datum is called
(a) total energy
(b) specific energy
(c) velocity head
(d) datum head
Answer:

Option (b)

14.
Hydraulic jump is observed in
(a) closed channel flow
(b) open channel flow
(c) flow changes
(d) volumetric changes
Answer:

Option (b)

15.
Hydraulic jump depends upon
(a) temperature
(b) pressure
(c) initial fluid speed
(d) volumetric change
Answer:

Option (c)

16.
In which case is the hydraulic jump not possible?
(a) Initial speed > critical speed
(b) Initial speed < critical speed
(c) Initial speed = critical speed
(d) Independent
Answer:

Option (b)

17.
Open channel flow takes place
(a) on a free surface
(b) in the pipe
(c) within a cylindrical depth
(d) in a pump
Answer:

Option (a)

18.
When the hydraulic jump is in a moving form it is called
(a) negative surge
(b) positive surge
(c) turbulent surge
(d) accelerated surge
Answer:

Option (b)

19.
Fluid speed before the hydraulic jump is ________
(a) critical
(b) supercritical
(c) subcritical
(d) dynamic
Answer:

Option (b)

20.
Fluid height after the hydraulic jump is ________
(a) normal
(b) low
(c) high
(d) zero
Answer:

Option (c)

Showing 11 to 10 out of 20 Questions
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