The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is________________________?

A. the meta-center should lie above the center of gravity
B. the center of buoyancy and the center of gravity must lie on the same vertical line
C. a righting couple should be formed
D. all the above are correct
E. none of the above is correct

A. specific weight
B. specific mass
C. specific gravity
D. specific density
E. none of the above

A. meta center should be above e.g.
B. center of buoyancy and e.g. must lie on same vertical plane
C. a righting couple should be formed
D. all of the above
E. none of the above

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