Standard BOD is measured at________________?
B. 25°C- 3day
C. 20°C – 5day(Correct)
D. 30°C- 5day
B. 25°C- 3day
C. 20°C – 5day(Correct)
D. 30°C- 5day
B. 25°C- 3day
C. 20°C – 5day(Correct)
D. 30°C- 5day
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The design discharge for the separate sewer system shall be taken as_____________?
The design discharge for the separate sewer system shall be taken as_____________? A. equal to dry weather flow (DWF)
B. 2xDWF
C. 3 x DWF
D. 6xDWF(Correct)The effect of increasing diameter of sewer on the self cleansing velocity is_____________?
The effect of increasing diameter of sewer on the self cleansing velocity is_____________? A. to decrease it
B. to increase it(Correct)
C. fluctuating
D. nilSelect the correct relationship between porosity (N), specific yield (y) and specific retention (R)________________?
Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)________________? A. N = y + R(Correct)
B. y = N + R
C. R = N + y
D. R > (N + y)