Related Questions

The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
A Half the depth
B Half the breadth
C Twice the depth
D Twice the breadth
The hydraulic mean depth or the hydraulic radius is the ratio of
A Area of flow and wetted perimeter
B Wetted perimeter and diameter of pipe
C Velocity of flow and area of flow
D None of these
A swimming pool is initially filled to a depth of 96 inches. After 2 weeks, the depth has decreased to9212 inches. Assuming that the depth decreased at a constant rate, after how many days would the water depth have reached 9334 inches?
A 3
B 9
C 7
D 6
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is
A $$\frac{{2{{\text{V}}^2}}}{{\sqrt 3 {\text{R}}}}$$
B $$\frac{{3{{\text{V}}^2}}}{{4{\text{R}}}}$$
C $$\frac{{5{{\text{V}}^2}}}{{2{\text{R}}}}$$
D $$\frac{{2{{\text{V}}^2}}}{{5{\text{R}}}}$$
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
A Hydrogen sulphide
B Carbon dioxide
C Methane
D Oxygen
ভার্চুয়াল রিয়েলিটিতে ব্যবহৃত HMD কোনটিকে নির্দেশ করে?
A বিশেষ চশমা
B হ্যান্ড গ্লাভস
C বডি স্যুট
D রিয়েলিটি ইঞ্জিন
In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is
A 0.5
B 0.84
C 1.84
D 1.25
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
A $$\frac{{\text{d}}}{4}$$
B $$\frac{{\text{d}}}{2}$$
C $$\frac{{2{\text{d}}}}{3}$$
D $$\frac{{\text{d}}}{3}$$
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called
A Inverted syphon
B Depressed sewer
C Sag pipe
D all of these
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
A $$\frac{1}{2}$$ × depth
B $$\frac{1}{2}$$ × breadth
C $$\frac{1}{2}$$ × sloping side
D $$\frac{1}{4}$$ × (depth + breadth)

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