The head loss due to exit from a pipe is given by H. What will be the head loss due to entrance of the same pipe under the same flow conditions?

Which of the following dimensionless numbers represents the ratio of inertial force to surface tension force?

Determine PA - PB (in Pascal) for an inverted U-tube differential manometer measuring two pressure points. Specific weight of water = 9810 N/m3, specific gravity of Hg = 13.6, and g = 9.81 m/s2.