Related Questions

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
The total energy line lies over the hydraulic gradient line by an amount equal to the
A Pressure head
B Velocity head
C Pressure head + velocity head
D Pressure head - velocity head
The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the
A Pressure head
B Velocity head
C Pressure head + velocity head
D Pressure head - velocity head
Which of the following CSS Gradient Functions sets the direction and colors of a gradient that fades from one color to the next in a straight line?
A gradient()
B line-gradient()
C linear-gradient()
D none of the mentioned
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
A $${\text{t}} = \frac{{{\text{h}} + 1}}{{{\text{G}} + {\text{t}}}}$$
B $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} + {\text{t}}}}$$
C $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} - {\text{t}}}}$$
D $${\text{t}} = \frac{{{\text{h}} + 1}}{{\text{G}}}$$
The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is
A Equal to HMD when flowing full
B Less than HMD when flowing full
C Greater than HMD when flowing full
D None of the above
The slope of the obstruction clearance line from the boundary of the heliport should be
A 1 : 2
B 1 : 5
C 1 : 8
D 1 : 40
A typist can type 125 pages, 36 lines cach, 11 words in each line in 5 days. How many pages of 30 lines each and 12 words to each line can he type in 6 days?
A 160
B 165
C 170
D 175
Drop manholes at the junctions of sewer lines, are provided if
A Invert level of a branch sewer is more than 60 cm that of the main sewer
B Sewer line runs along a main road
C Ordinary manhole cannot be built
D Two sewer lines intersect
In case of sewer lines
A Water test is carried out to check water tightness of the joints
B Test for straightness is carried out with the help of a lamp and mirror
C Obstruction test is carried out with the help of smooth ball of diameter 13 mm
D All the above

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