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Fluid Mechanics : Nuclear Quiz 2
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Question 1
A rectangular channel is 3 m wide and carries a flow of 2.7 
at a depth of 0.9 m. A contraction of the channel width is proposed at a certain section. The smaller allowable contracted width that will not affect the upstream flow conditions is___________m.
at a depth of 0.9 m. A contraction of the channel width is proposed at a certain section. The smaller allowable contracted width that will not affect the upstream flow conditions is___________m. Question 2
A hydraulically most efficient trapezoidal channel section carries water at the optimal depth of 0.72 m, Chezy coefficient is 75 and the longitudinal slope is 1 in 2500. What is the discharge (in 
) through the channel?
) through the channel? Question 3
A tank 1.5 m high stands of a trolley and is full of water. It has an orifice of diameter 0.1 m at 0.3 from the bottom of the tank. If the orifice is suddenly opened, the propelling force on the trolley is ________N.
[Take coefficient of discharge of the orifice as 0.60]
[Take coefficient of discharge of the orifice as 0.60]
Question 4
A velocity vector is given as
And
Find the value of
And
Find the value of
Question 5
If two points are at a distance of 5 m to each other and line joining them is inclined at 
. What is ratio of pressure at these two points. (Take upper point at 2 m depth.)
. What is ratio of pressure at these two points. (Take upper point at 2 m depth.)
Question 6
Match list-I with list-II and select the correct answer using the codes given below the lists:
Question 7
What is flowing through penstock of diameter 90 cm & thickness 3 mm. Youngs modulus of Elasticity of pipe is 2.1 x 105 N/mm2 & K = 2.1 x 103 N/mm2. If value of water hammer pressure considering pipe as rigid & flexible is P1 & P2 respectively. Then 
will be
will be
Question 8
An orifice is located in the lower side of a tank. The constant water level is 2m above the center of orifice. On ejecting water from orifice, what is the horizontal distance (m) from the venacontracta to where the jet is 10cm below the venacontracta? Take coefficient of velocity 0.98
Question 9
The stream function 
for uniform flow past a circular cylinder of radius 'a' in polar co-ordinates is given by 
is the free stream velocity parallel to the horizontal axis. The velocity component in r direction (Vr) on the cylinder at 90 ° is ________.
for uniform flow past a circular cylinder of radius 'a' in polar co-ordinates is given by is the free stream velocity parallel to the horizontal axis. The velocity component in r direction (Vr) on the cylinder at 90 ° is ________. Question 10
In a water supply system, water flows in from pipes 1 and 2 and goes out from pipes 3 and 4 as shown. If all the pipes have the same diameter, which of the following must be correct.
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Jul 26ESE & GATE CE
