The difference between the heights of energy grade line (EGL) and hydraulic grade line (HGL) is equal to (a) z (b) $P/ ho g$ (c) $V^2/2g$ (d) $z + P/ ho g$ (e) $z + V^2/2g$

The water level in a tank is 20 m above the ground. A hose is connected to the bottom of the tank, and the nozzle at the end of the hose is pointed straight up. The water stream from the nozzle is observed to rise 25 m above the ground. Explain what may cause the water from the hose to rise above the tank level.

What is irreversible head loss? How is it related to the mechanical energy loss?

In a certain application, a siphon must go over a high wall. Can water or oil with a specific gravity of 0.8 go over a higher wall? Why?

Which parameter is not related in the Bernoulli equation? (a) Density(b) Velocity(c) Time(d) Pressure(e) Elevation

Consider the steady adiabatic flow of an incompressible fluid. Can the temperature of the fluid decrease during flow? Explain.

The water level of a tank on a building roof is 20 m above the ground. A hose leads from the tank bottom to the ground. The end of the hose has a nozzle, which is pointed straight up. What is the maximum height to which the water j could rise? What factors would reduce this height?

The velocity of a liquid flowing in a circular pipe of radius R varies from zero at the wall to a maximum at the pipe center. The velocity distribution in the pipe can be represented as V(r), where r is the radial distance from the pipe center. Based on the definition of mass flow rate $\dot{m}$, obtain a relation for the average velocity in terms of V(r), R, and r.

What are the three major assumptions used in the derivation of the Bernoulli equation?

Air at 100 kPa and $20^\circ C$ flows in a 12-cm-diameter pipe at a rate of 9.5 kg/min. The velocity of air in the pipe is (a) 1.4 m/s(b) 6.0 m/s(c) 9.5 m/s(d) 11.8 m/s(e) 14.0 m/s

Water is to be transported in a clay tile lined rectangular channel at a rate of $0.8 m^3/s.$ The channel bottom slope is 0.0015. The width of the channel for the best cross section is (a) 0.68 m(b) 1.33 m(c) 1.63 m(d) 0.98 m(e) 1.15 m

Write each number in two other forms (fraction, decimal, or percent). 15%

Explain how and why a siphon works. Someone proposes siphoning cold water over a 7-m-high wall. Is this feasible? Explain.

Water at 120 kPa (gage) is flowing in a horizontal pipe at a velocity of 1.15 m/s. The pipe makes a 908 angle at the exit and the water exits the pipe vertically into the air. The maximum height the water jet can rise is (a) 6.9 m(b) 7.8 m(c) 9.4 m(d) 11.5 m(e) 12.3 m