Civil Engineering - Water Supply Engineering

6.
Ground water from artesian wells
contains no suspended materials
contains dissolved salts
may be saltish and hard
generally require lesser treatment
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Property of earth to allow water to pass through it, is known as
perviousness
porosity
permeability
transmissibility.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
Derivation of Thiem's formula
is based on the assumption
the aquifer is homogeneous, isotropic and of infinite depth and area
the well is sunk through the full depth of the aquifer
the flow lines are radial and horizontal, and the flow is laminar
for hydraulic gradient in Darcy's equation, tangent value is used for sine value
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
Pick up the incorrect statement from the following :
Porosity of clay sand soil is 45%
Porosity of pure sand is 35%
Porosity of sand stone is up to 15%
Least porosity is that of granite and quartz
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Water is supplied from the source to the treatment plant under gravity in
Calcutta
Delhi
Madras
Bombay.
Answer: Option
Explanation:
No answer description is available. Let's discuss.