INTRODUCTION
The average quantity of water (in lpcd)
required for domestic purposes according to
IS code is ________
135
Surface water can act as a source of water
in water supply scheme.
True
The efficiency of sedimentation tank does not depend upon
depth of tank
The most commonly used chemical for dechlorination of water, is
sodium sulphite
Displacement pump is classified on the
basis of _____________
Mechanical operation of principle
In which type of water demand, minimum
average consumption of water takes place?
Fire demand
Which of the following can be designated
as an intake structure?
Reservoir
The detention period for plain sedimentation water tanks, is usually
24 to 36 hours.
For plain chlorination of water, the quantity of chlorine used, is
0.5 mg/litre.
The maximum efficiency of a centrifugal
pump is _____________
85%
Water lost in theft and waste contributes to
how much % of total consumption?
15
How many types of aerators are commonly
used in the treatment of water?
4
__________ is an operation designed to
force agitation in the fluid and induce
coagulation.
a) Sedimenta tion
b) Flocculation
c) Disinfection
d) Aeration
Alum is chemically
Aluminium sulphate
Consider the following statements.
i. Capacity of the pump
ii. Number of pump units
iii. Discharge condition
The selection of a particular type of pump
depends on which of the following?
a) i, ii, iii