Civil Engineering - Water Supply Engineering

11. 

Asbestos pipes are joined by means of

A. flanged joint
B. flexible joint
C. dresser coupling joint
D. simplex joint
E. socket and spigot joint.

Answer: Option D

Explanation:

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12. 

Abyssinian tube well is a special type of

A. slotted type wells
B. cavity type wells
C. strainer type well
D. none of these.

Answer: Option C

Explanation:

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13. 

Chlorination of water does not remove

A. ammonia content
B. B.O.D.
C. organic matter content
D. dissolved oxygen.

Answer: Option D

Explanation:

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14. 

The efficiency of a pumping set, is generally assumed

A. 50%
B. 55%
C. 60%
D. 65%
E. 70%.

Answer: Option D

Explanation:

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15. 

To remove very fine suspended particles from water, the method adopted is

A. screening
B. sedimentation
C. boiling
D. filtration.

Answer: Option D

Explanation:

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