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 :

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

Pick up the correct statement from the following :

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

Pick up the correct statement from the following :

Hardness of water can be removed by boiling if it is due to

Most important source of water for public water supply, is from

The capability of a soil mass of full width and depth to transmit water, is known

Cast iron pipes are generally preferred to, because

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 :