The characteristics of water flow over a dam spillway are to be measured in a geometrically similar small-scale laboratory model. The width of the prototype is 30 m and the width of the model is 2 m. If the flow in the prototype is 100 m3/s, the flow rate in the model for similitude is:

Explanation:

From the given information:

The width of the prototype = 30 m

The flow of the prototype = 100 m/s

width of the model = 2 m

The flow rate of the model can be calculated by using  the geometrical similarities of Froude's Number Fr

∴

twist boundary

explanation:

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.