The safe height (h) to diameter D. ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than _________________?

A. Facilitate draining out liquid from a tray when the unit is not in operation
B. Are normally located near the overflow weir so that any delivery of liquid during operation
follows approximately the same path as the overflow fluid
C. Must be large enough (usually 1/4″ to 5/8″ dia) to prevent plugging but should not deliver
excessive amount of fluid during operation
D. All A., B. and C.

A. Maldistribution of gas
B. Back trapg
C. Gas blowing beneath cap skit
D. All A., B. and C.

A. Smaller than
B. Greater than
C. Equal to
D. Not related with

A. Less than that for Tee (used as elbow, entering run)
B. More than that for Tee (used as elbow, entering run)
C. Around 90
D. Both B. and C.

A. Zig-zag
B. Chain
C. Diamond
D. None of these

A. Least radius of gyration
B. Axis of the load
C. Perpendicular to the axis of the load
D. None of these