A. D8/3 = 4 b8/3
B. D3/8 = 4 b3/8
C. D2/3 = 4 b2/3
D. D3/2 = 4 b3/2
Related Mcqs:
- If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is___________________?
A. 1045 mm
B. 1065 mm
C. 1075 mm
D. 1095 mm - The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is____________________?
A. 1.095
B. 1.085
C. 1.075
D. 1.065 - If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is_______________?
A. D’ = 0.64 D
B. D’ = 0.74 D
C. D’ = 0.84 D
D. D’ = 0.94 D - A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is____________________?
A. 100
B. 1000
C. 5000
D. 10000 - Two pipe systems can be said to be equivalent, when the following quantites are same______________?
A. friction loss and flow
B. length and diameter
C. flow and length
D. friction factor and diameter
E. velocity and diameter - General energy equation holds for_________________?
A. steady flow
B. turbulent flow
C. laminar flow
D. non-uniform flow
E. all of the above - The equation of continuity holds good when the flow __________________?
A. is steady
B. is one dimensional
C. velocity is uniform at all the cross sec-tions
D. all of the above
E. none of the above - Newton’s law of viscosity is a relationship between________________?
A. shear stress anctthejiate of angular distortion
B. shear stress and viscosity
C. shear stress, velocity and viscosity
D. pressure, velocity and viscosity
E. shear stress, pressure and rate of angular distortion - The specific weight of water is 1000 kg/m” _______________?
A. at norma] pressure of 760 mm
B. at 4°C temperature
C. at mean sea level
D. all the above
E. none of the above. - The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________?
A. viscosity
B. osmosis
C. surface tension
D. cohesion
E. diffusivity
