Sewer ventilating columns are generally placed at distances 150 m to 300 m upper

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Question
Sewer ventilating columns are generally placed at
Options
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.

Correct Answer

all the above.

More questions

2. The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is
Options
A. 4.4 mm
B. 5.5 mm
C. 6.5 mm
D. 7.5 mm
E. 10 mm

3. The minimum length of the side or diameter of the column base shall not be less than (where d is the minimum diameter of the column).
Options
A. (d + 75) mm
B. 1.2 (d - 75) mm
C. 1.5 (d + 75) mm
D. 1.6 (d + 75) mm

4. Water may not contain much impurities if its source is
Options
A. reservoirs
B. stream flowing in plains
C. lakes in lower regions
D. spring along hill slopes
E. none of these.

6. The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be
Options
A. 30�
B. 45�
C. 60�
D. 75�.

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