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These practice certification questions are provided for your entertainment only. The actual certification examination at this Internet site is not available without a proper address and password. For information regarding this service, please contact DW&BP at backflow@dwbp-online.com.

These sample questions were published in the February, 1998 edition of DW&BP. The following questions were provided to DW&BP by the Backflow Prevention Institute. Each of these questions are specific for the reduced pressure principle assembly. Please remember that these questions are Copyright © 1997 by Drinking Water & Backflow Prevention magazine - ALL RIGHTS RESERVED. Simply stated, any reproduction of these questions without the written permission of DW&BP is forbidden. This includes the use of these materials in any classroom or educational setting. We ask that you contact us at dwbp.magazine@drstuasaype.com if you have any question.

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— 1 — This spring's minimum tension is:

a) 1.0 psi
 
b) 2.0 psi
 
c) 3.0 psi
 
d) 5.0 psi
 
e) 7.0 psi

 

 

 

 

— 2 — This spring's minimum tension is:  

a) 1.0 psi
 
b) 2.0 psi
 
c) 3.0 psi
 
d) 5.0 psi
 
e) 7.0 psi
 

 

 

 

 

 

 

 

— 3 — Number 3 is pointing to a(n):

a) check valve number 1
 
b) pressure sensing line
 
c) relief valve seat
 
d) spring retainer
 
e) valve guide
 

 

 

 

 

 

 

— 4 — This spring's minimum tension is:

a) 1.0 psi
 
b) 2.0 psi
 
c) 3.0 psi
 
d) 5.0 psi
 
e) 7.0 psi

 

 

 

 

 

— 5 — Number 5 identifies a(n):

a) air bleed valve
 
b) check valve number 2
 
c) relief valve sensing line
 
d) test cock number 2
 
e) test cock number 3
 

 

 

 

 

 

— 6 — The calculated "buffer" should be at least:

a) 1 psid
 
b) 2 psid
 
c) 3 psid
 
d) 4 psid
 
e) 5 psid

 

 

 

 

 

— 7 — Water supply pressure tends to:

a) close the check valve
 
b) close the relief valve
 
c) open the relief valve
 
d) increase through the zone
 
e) reduced stagnant cavities

 

 

 

 

 

 

 

— 8 — A relief valve spring tends to:

a) assist water pressure in the 'zone'
 
b) become submerged when opening
 
c) break with freezing temperatures
 
d) weaken without flexing
 
e) work with supply pressure

 

 

 

 

 

 

— 9 — Test cock number 1 is used to:

a) bypass water for a leaking valve
 
b) force a relief valve diaphragm open
 
c) test check valve number 1 for backpressure
 
d) relieve supply pressure
 
e) test check valve number two

 

 

 

 

 

 

— 10 — RP's are used on the following except:

a) backpressure applications
 
b) backsiphonage applications
 
c) containment installations
 
d) health hazard cross connections
 
e) water closets

 

(END OF EXAMINATION)

 

 

 

 

 

 

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