A. is the time taken, for precipitation
B. duration of rainfall.
C. time taken for all the ran off to reach the drain
D. time taken for the storm water to travel from the most remote point to the drain
Related Mcqs:
- The fire demand of a city may be worked out by _________________?
A. Kuichling’s formula
B. Freeman formula
C. Under Writers formula
D. Bustan’s formula
E. All the above. - The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is________________?
A. 2 m
B. 2.25 m
C. 2.50 m
D. 2.75 m
E. 3.00 m - According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for________________?
A. Boarding schools
B. Nurses home and medical quarters
C. hostels
D. all the above - The factor affecting per capita demand, is___________________?
A. size of the city
B. climatic conditions
C. pressure in water mains
D. cost of water
E. all the above - Acidity in water is caused due to_______________?
A. Mineral acids
B. Free CO2
C. Iron sulphate
D. Aluminium sulphate
E. All the above - In slow sland filters, the turbidity of raw water can be removed only up to_________________?
A. 60 mg/litre
B. 75 mg/litre
C. 100 gm/litre
D. 150 mg/litre - Asbestos pipes are ______________?
A. light in weight and easy to transport
B. highly resistant to corrosion
C. high flexible to accommodate deflection upto 12°
D. very much smooth and hydraulically efficient
E. all the above - By boiling water, hardness can be removed if it is due to_________________?
A. calcium sulphate
B. magnesium sulphate
C. calcium nitrate
D. calcium bicarbonate
E. none of these - If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is______________________?
A. 1880 kilo litres
B. 2880 kilo litres
C. 3880 kilo litres
D. 4880 kilo litres - As per IS : 1172-1963, water required per head per day for average domestic purposes, is_______________?
A. 50 litres
B. 65 litres
C. 85 litres
D. 105 litres
E. 135 litres
