Civil Engineering - Water Supply Engineering

1. 

Pick up the correct statement from the following :

A. For determination of small colour intensities, tintometer is generally used
B. The odour of water sample is generally measured by a term called odour intensity
C. The colour of water sample may be detected by Nessler tube
D. Specific conductivity of water measures the amount of dissolved salt
E. All the above.

Answer: Option E

Explanation:

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2. 

Before constructing a dam, the factor to be considered for controlling sedimentation, is

A. selection of dam site
B. construction of check dams
C. providing vegetation screens
D. providing under-sluices in the dam
E. All the above.

Answer: Option E

Explanation:

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3. 

The process of passing water through beds of granular materials, is called

A. screening
B. sedimentation
C. filtration
D. none of these.

Answer: Option C

Explanation:

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4. 

If Q is discharge is cubicmetres per sec and D is the economical diameter of the pipe. According to Lea

A. D = 0.67 to 0.87 Q
B. D = 0.77 to 0.97 Q
C. D = 0.97 to 1.22 Q
D. D = 1.22 to 1.33 Q.

Answer: Option C

Explanation:

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5. 

Water to the consumers may be supplied from

A. infiltration galleries connected to sump well
B. infiltration well dug out on the banks of rivers
C. ranney wells sunk to the water level
D. all the above.

Answer: Option D

Explanation:

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