College of Pumps - Final Exam

Answer the following questions to earn your certificate of completeion of the College of Pumps. When you are finished, fill out the form and we will send you your Certificate of Completion and/or badge in the mail!

1. Centrifugal pumps need in the volute to start pumping.

2. External pumps are specially designed to , usually using a special basket.

3. Submersible pumps are the first choice of contractors and homeowners because?

A) They're quiet

B) They're hidden from view

C) They're easier to plumb

D) They're typically less expensive

E) All of the above

4. The GPH of a pump varies with the...

A) Type of the feature and the size of the inlet.

B) Width of the feature and the size of the plumbing

C) Head height of the feature and the diameter of the tubing

D) Pressure of the feature and the diameter of the tubing

E) Head height of the feature and the size of the inlet

5. TRUE or FALSE. Pressure can be expressed either in psi or feet of head, where 1 psi =7.56 feet of head.

A) True

B) False

6. TRUE or FALSE. Restrictive plumbing cuts down on flow, adds to operating costs and kills pumps.

A) True

B) False

7. The height of waterfall in feet plus the Friction Head equals .

8. To create a clean sheet of water off a sharp edge, it requires about...

A) 200 GPH per inch

B) 1500 GPH per foot

C) 750 GPH per inch

D) 750 GPH per foot

E) 2250 GPH per foot

9. TRUE or FALSE. The four types of pumps in common use for water features are Direct Drive, Axial, Magnetic Induction and Asynchronous Pumps.

A) True

B) False

10. Asynchronous Hybrids combine the of Direct Drives with the efficiency of .

A) Torque, Mag Drives

B) Power consumption, external pumps

C) Impeller design, magnetic induction

D) Stainless steel construction, axial flow

E) Impeller, external pumps

11. Pumps will last longest and perform best when run at their...

A) Shut off height

B) Cavitation point

C) Maximum range

D) Best Efficiency Point (B.E.P.)

12. Partial blockage of the of the pump can lead to ovreheating and premature failure.

13. TRUE or FALSE. Two half-size pumps will always use less electricity than a single double-size pump of the same type

A) True

B) False

14. Suction Cavitation can easily be controlled by installing in the outlet plumbing.

A) Restrictive plumbing

B) A check valve

C) A ball valve

D) Either A or B

E) Either A or C

15. Suction Cavitation can lead to damage of both the pump and the .

16. The Friction Loss Coefficient Chart tells you how much friction there is in the...

A) Volute

B) Plumbing

C) Check Valve

D) Water Feature

17. TRUE or FALSE. The Fitting Friction Loss Chart lists additional tubing lengths per fitting to add to the tubing for friction calculations

A) True

B) False

18. Lowering the TDH with less restrictive plumbing will save you .

19. The Tubing Flow Rates Chart helps the installer maximize plumbing .

College of Pumps Final Exam: