The minimum and maximum diameters of sewers shall preferably be_________________?

Related Mcqs:

1. Which of the following sewers is preferred for combined system of sewage ?

   A. circular sewer B. egg shaped sewer C. rectangular sewer D. none of the above...

2. The self cleansing velocity for all sewers in India is usually_________________?

   A. less than 1.0 m/sec B. 1.0 m/sec to 1.2 m/sec C. 1.5 m/sec to 2.0 m/sec D. 3.0 m/sec to 3.5 m/sec...

3. Laying of sewers is usually done with the help of________________?

   A. a theodolite B. a compass C. sight rails and boning rods D. a plane table...

4. Corrosion in concrete sewers is caused by______________?

   A. septic conditions B. dissolved oxygen C. chlorine D. nitrogen...

5. The main disadvantage of cement concrete sewers is________________?

   A. less strength B. difficulty in construction C. difficulty in transportation due to heavy weight D. less life...

6. A sewer that receives the discharge of a number of house sewers is called________________?

   A. house sewer B. lateral sewer C. intercepting sewer D. submain sewer...

7. The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is______________?

   A. 1 ppm B. 4 ppm C. 10 ppm D. 40 ppm...

8. The design discharge for the separate sewer system shall be taken as_____________?

   A. equal to dry weather flow (DWF) B. 2xDWF C. 3 x DWF D. 6xDWF...

9. The design discharge for the combined sewer system shall be taken as________________?

   A. equal to rainfall B. rainfall + DWF C. rainfall + 2 DWF D. rainfall + 6 DWF...

10. The slope of sewer shall be__________________?

    A. given in the direction of natural slope of ground B. given in the direction opposite to natural slope of ground C. zero D. steeper than 1 in 20...