1.The consumption of water increases with increase in the distribution
pressure-Higher distribution pressure causes more loss and waste of water.
Select your answer according to the coding system given below
2.The per capita consumption of a locality is affected by
-climatic conditions,quality of water,distribution pressure
3.Which of the following causes a decrease in per capita consumption ?
-use of metering system
4.The hourly variation factor is. usually taken as-1.5
5.If the average daily consumption of a city is 100,000 m3, the maximum daily consumption on peak hourly demand will be-270000 m 3
6.The distribution mains are designed for-maximum hourly demand on maximum day
7.As compared to geometrical increase method of forecasting population, arithmetical increase method gives-lesser value
8.The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is-10920
9.The suitable method of forecasting population for a young and rapidly increasing city is-geometrical increase method
10.The depression of water table in a well due to pumping will be maximum-close to the well
11.The devices which are installed for drawing water from the sources are called-
intakes
12.Select the correct relationship between porosity (N), specific yield (y) and
specific retention (R)
-N = y + R
13.The type of valve, which is provided on the suction pipe in a tube-well, is
-reflux valve
14.The maximum discharge of a tube-well is about-50 litres/sec
15.As compared to shallow-wells, deep wells have-more discharge
16.Ground water is usually free from-suspended impurities
17.The polluted water is one which-consists of undesirable substances
rendering it unfit for drinking and domestic use
18.Which of the following is not a water borne disease ?-maleria
19.The most common cause of acidity in water is-carbon dioxide
20.The phenolic compounds in public water supply should not be more than-0.001 ppm