Which of the following blasters contains pulverized alum?

_____________ torsion is produced when twisting couple coincides with the axis of the shaft.

What is the general value for coefficient of contraction?

________ protects the weir from erosive forces during floods.

</p><p>Pure torsion of a shaft produces:</p> <p></p>

________ possesses less silting and scouring.

The quantity of losses in the river can be measured with an aid of ____

___________ has steep slopes and gives more run off.

_____ slip occurs, when the delivery pipe is short and the suction pipe is long.