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
Related Mcqs:
- 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 - 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 - For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be__________________?
A. X/4
B. X/2
C. X
D. 2X - If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be__________________?
A. 4 mm/hr
B. lOmm/hr
C. 20 mm/hr
D. 40 mm/hr - A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called________________?
A. house sewer
B. lateral sewer
C. main sewer
D. submain sewer - The effect of increasing diameter of sewer on the self cleansing velocity is_____________?
A. to decrease it
B. to increase it
C. fluctuating
D. nil - The type of sewer which is suitable for both combined and separate system is_____________?
A. circular sewer
B. egg shaped sewer
C. horse-shoe type sewer
D. semi-elliptical sewer - The means of access for inspection and cleaning of sewer line is known as_______________?
A. inlet
B. manhole
C. drop manhole
D. catch basin - The hydraulic mean depth (HMD. for an egg-shaped sewer flowing two-third full is_______________?
A. equal to HMD when flowing full
B. less than HMD when flowing full
C. greater than HMD when flowing full
D. none of the above - 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
