A Best Way To Crack Gorenment Job Exams

Civil Engineering Objective Questions { Environmental Engineering }



92.  Sewer ventilating columns are generally placed at
A. distances 150 m to 300 m
B. upper ends of branch sewers
C. every change in the size of sewers
D. all the above.

93. 'Cowl' is provided at
A. lower end of ventilating column
B. upper end of ventilating column
C. upper end of the manhole
D. first step in manhole:

94.  The sewage is pumped up
A. from low lying areas
B. from flat areas
C. from basements
D. all the above.

95.  The non-clog pump which permits solid matter to pass out with the liquid sewage, is
A. centrifugal pump
B. reciprocating pump
C. pneumatic ejector
D. none of these.

96. The disintegrating pump in which solid matter is broken up before passing out, is
A. centrifugal pump
B. reciprocating pump
C. pneumatic ejector
D. none of these.

97. The most widely used pump for lifting sewage is
A. centrifugal pump
B. reciprocating pump
C. pneumatic ejector
D. air pressure pump.

98.  A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is
A. 2.30 m
B. 2.40 m
C. 2.45 m
D. 2.50 m.

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