The ratio of maximum hourly consumption and average hourly consumption of the maximum day, is
The ratio of the maximum daily consumption to the average daily demand, is
Dead storage of a reservoir of Q capacity generally provided for silt deposition during its life time, is generally kept
Water gets evaporated from water surfaces and land surfaces, get converted into water drops at lower temperatures, flows over ground surface and finally meets its source, i.e. lake, sea, etc. This entire process is generally known as
The four major water supply distribution systems, are
Pick up the correct statement from the following :
In centrifugal pump installation,
Cast iron pipes are generally preferred to, because
The ratio of discharge and plan area of a continuous flow type settling tank, is known
If the specific capacity of a well is 0.x 10-3 per sec, the discharge from a well of 4 m diameter under a depression head of 4 m, is
Most important source of water for public water supply, is from
Specific capacity or yield of wells, is generally expressed, as
Pipes are laid parallel
The factor to be considered for the source of city water supply, is
Pick up the wrong nominal internal diameter of cast iron (spun) pipes in mm from the following :
Maximum permissible colour for domestic water supplies, based on Cobalt scale, is
The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
The population of a city inisThe average per decade of the previous records of population isand average percentage per decade is 20%. The population of the city based on geometrical increase method, in the yearwill be
Normal values of overflow rate for plain sedimentation tank using coagulants, is
The maximum pressure to which a pipe is subjected to during its operation, is known
Hardness of water can be removed by boiling if it is due to
The capability of a soil mass of full width and depth to transmit water, is known
The formula Q = P - K[1.8T +in which Q is runoff, P is annual rain fall in cm, T is mean annual temperature in centigrades and K is a constant, is known
To control the growth of algae in reservoirs, the compound which is used, is
Yield of a drainage basin is :
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