When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be _________________?

A. horizontal
B. nearly horizontal
C. steep
D. first rise and then fall
E. none of the above

A. of such a size that it delivers unit dis-charge at unit head
B. of such a size that it delivers unit dis-charge at unit power
C. of such a size that it requires unit power per unit head
D. of such a size that it produces unit horse power with unit head
E. none of the above

The angle of taper on draft tube is
A. greater than 15°
B. greater than 8°
C. greater than 5°
D. less than 8°
E. less than 3°.