Design Team Post-test

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1. What law does the picture below apply to? *

1 point

Bernoulli's Law

Law of Conservation of Energy

Law of Flow Rate

Hydraulic Grade line Law

2. What equation is used to solve for Flow Rate? *

1 point

dM = (ρvA)in dt - (ρvA)out dt

HGL = (p / γ)+ h

Q= v * A

H = f (L/D)(V^2/2g)

3. What is the level water would rise to in a small, vertical tube connected to the pipe *

1 point

Energy Conservation

Flow Rate

Bernoulli Law

Hydraulic Grade Line

4. Using the below equation, solve for v2 given the inlet velocity is 10 ft/s at a pressure of 3000 lb/ft^2. The water exits at 2000 lb/ft^2. *

1 point

v2=7.80 ft/s

v2=33.6 m/s

v2=139.2 m/s

v2=33.6 ft/s

5. The Law of Energy Conservation is fundamental in fluid mechanics and a basis for *

1 point

calculating friction

the Bernoulli equation

finding average velocity

finding gravity

6. If water flows through a 2.5 ft^2 area pipe at 10.5 feet per second, what is the flow rate that will come out of the pipe? *

1 point

51.5 ft^3/s

26.25 ft^3/s

82.47 ft^3/s

89.5 ft^3/s

7. Check all that apply to pressure concepts *

1 point

Pressure can be driven by gravity

Pressure is NOT relative to height of the water column

There cannot be pressure losses during flow in pipes

Force per unit area

Shape of the container makes a big difference in calculations

Required

8. If the pressure for the figure farthest left is 10 lb/ft^2 at the marked height location (in red), what are the other pressures at the same height? Mark all that are true. See below for the figure. *

1 point

Second figure would be 15 lb/ft^2

Third figure would be 11 lb/ft^2

Fourth figure would be 10 lb/ft^2

Cannot be determined from the given information

Required

9. What is the pressure at the bottom of a 42 ft pipe full of water? (See the figure below). *

1 point

412 lb/ft^2

2622 lb/in^2

412 lb/in^2

2622 lb/ft^2

10. Water is flowing in a fire hose with a velocity of 1.0 ft/s and a pressure of 6264 lbs/ft^2. At the nozzle the pressure decreases to 2880 lbs/ft^2. Calculate the velocity of the water exiting the nozzle. *

1 point

1.47 ft/s

59.1 ft/s

10.46 ft/s

26.29 ft/s

11. Hydraulic grade line is *

1 point

Profile of water flowing in a pipe

Flow of water through a pipe in a given time

Force per unit area

energy can neither be created nor destroyed

12. Pressure in a pipe is 100lb/ft^2. The height of the pipe where our faucet is 10ft off the ground. Calculate the HGL and explain if water will come out the faucet. *

1 point

16 ft., NO

16ft., YES

11.6 ft., YES

11.6ft., NO

13. If we were given the picture below, what equation would we use to figure out if water would be available to the houses *

1 point

(p / γ)+ h

Q= v * A

v2 =√(2g(p1-p2))/y) + v12

yh=p

14. What concept does the picture below represent *

1 point

Conservation of mass

Bernoulli

Flow Rate

Hydraulic Grade Line

15. If water flows through a pipe with an area of 5.2 feet squared at 3 feet per second, what is the rate it will come out of the pipe? *

1 point

15.6 ft3/sec

1.73 ft3/sec

0.577 ft3/sec

2.20 ft3/sec

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