D is the diameter of a circular sewer and ? is the side of a square section sewer. If both are hydraulically equivalent, the relationship which holds good, is
Options
A. ?D8/3 = 4 b8/3
B. ?D3/8 = 4 b3/8
C. ?D2/3 = 4 b2/3
D. ?D3/2 = 4 b3/2
E. none of these.
Correct Answer
?D8/3 = 4 b8/3
More questions
1. For providing a raft foundation, the following activities are involved
ramming the foundation bed
excavation of the soil upto required depth
laying the reinforcement over the foundation bed
curing the cement concrete placed over reinforcement
pouring the cement concrete over the reinforcement.
2. If the ratio of effective span to overall depth of a simply supported beam is equal or greater than 1 but less than or equal to 2, the lever arm, is
8. Pick up the incorrect statement from the following :
Options
A. An impervious layer a few metres below the water table in the sub-soil, is generally called Mota layer (6) Mota layer is very useful to give structural support to open deep wells
B. A bore hole is generally provided in the mota layer for deep wells
C. Shallow wells are always of less depth as compared to deep wells
10. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is