Dry weather flow is__________________?

Related Mcqs:

1. When drainage to sewage ratio is 20, the peak dry weather flow is_______________?

   A. 20% of the design discharge
   B. Slightly less than 5% of the design discharge
   C. Slightly more than 5% of the design discharge
   D. None of these

2. Dry water flow in a combined sewer, is______________________?

   A. Industrial sewage
   B. Domestic sewage
   C. Storm water
   D. Inclusive of domestic and industrial sewage but excludes storm water

3. The suitable cross-section of sewers to carry combined flow, is__________________?

   A. Circular
   B. Egg shaped
   C. Rectangular
   D. Horse shoe shaped

4. For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is__________________?

   A. 16 m
   B. 20 m
   C. 24 m
   D. 30 m

5. In the case of steady flow of a fluid, the acceleration of any fluid particle is__________________?

   A. constant
   B. variable
   C. zero
   D. zero under limiting conditions
   E. never zero

6. In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

   A. maximum
   B. minimum
   C. zero
   D. non-zero finite
   E. unpredictable

7. For pipes, laminar flow occurs when Roynolds number is__________________?

   A. less than 2000
   B. between 2000 and 4000
   C. more than 4000
   D. less than 4000
   E. none of the above

8. The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is___________________?

   A. 1.5
   B. 2.0
   C. 3.0
   D. 4.0

9. The ratio of minimum hourly flow to the average flow of sewage is_________________?

   A. 1/4
   B. 1/3
   C. 1/2
   D. 3/4

10. You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________?

    A. Full depth
    B. Half full
    C. Two third full
    D. Three fourth full