1 | Page
Sprinkler Systems Questions and Correct
Answers
True or False: pursuant to the latest NFPA 13, deluge systems can
be scheduled systems Ans: — False
True or False: the orifice of the air supply to the dry pipe valve is
always smaller then the orifice of the smallest sprinkler in the
system Ans: — False
True or False: a dry pipe system may be charged with compressed
nitrogen Ans: — True
True or False: the allowable leakage for overhead piping is the
same as the leakage that applies to underground piping Ans: —
False
True or False: According to NFPA 13, the air gauge and water
gauge are interchangeable Ans: — False
True or False: When a pressure switch is installed on a wet system
alarm line, it should be sensitive to decreasing pressure Ans: —
False
True or False: The use of reconditioned valves and devices as
replacement equipment in existing systems shall be permitted
Ans: — True
True or False: In a looped sprinkler system, the branch lines are all
tied together Ans: — False
True or False: Paddle-Type water flow alarm indicators shall be
used in wet systems only Ans: — True
True or False: not more then 600 automatic sprinkler heads shall
be controlled by any single preaction valve Ans: — False
When water pressure varies a great deal, a retard chamber is not
sufficient to prevent false alarms. What other device can be used?
© 2025 All rights reserved
, 2 | Page
A. A pressure switch. C. A jockey pump
B. An excess pressure pump. D. All of the above Ans: — B. An
excess pressure pump
What is used on a butterfly valve from being opened or closed too
quickly?
A. A Stuffing box C. A gear operator
B. A resilient wedge D. A chain lock Ans: — C. A gear operator
A dry pilot line must be constructed of?
A. Schedule 40 pipe
B. cast iron pipe
C. Galvanized steel or copper tubing
D. Cast iron or copper tubing Ans: — C. Galvanized steel or copper
tubing
The proper device to be used on a dry pipe alarm line to give an
electrical alarm when the valve trips would be a ____
A. Flow switch. C. Monitor switch
B. Pressure switch. D. A or B Ans: — B. Monitor switch
An electrical monitor is being placed on the alarm line of an alarm
valve. There is a retard chamber in the trim. That electrical
monitor would be a ___
A. Flow switch
B. Monitor switch
C. Pressure switch
© 2025 All rights reserved
Sprinkler Systems Questions and Correct
Answers
True or False: pursuant to the latest NFPA 13, deluge systems can
be scheduled systems Ans: — False
True or False: the orifice of the air supply to the dry pipe valve is
always smaller then the orifice of the smallest sprinkler in the
system Ans: — False
True or False: a dry pipe system may be charged with compressed
nitrogen Ans: — True
True or False: the allowable leakage for overhead piping is the
same as the leakage that applies to underground piping Ans: —
False
True or False: According to NFPA 13, the air gauge and water
gauge are interchangeable Ans: — False
True or False: When a pressure switch is installed on a wet system
alarm line, it should be sensitive to decreasing pressure Ans: —
False
True or False: The use of reconditioned valves and devices as
replacement equipment in existing systems shall be permitted
Ans: — True
True or False: In a looped sprinkler system, the branch lines are all
tied together Ans: — False
True or False: Paddle-Type water flow alarm indicators shall be
used in wet systems only Ans: — True
True or False: not more then 600 automatic sprinkler heads shall
be controlled by any single preaction valve Ans: — False
When water pressure varies a great deal, a retard chamber is not
sufficient to prevent false alarms. What other device can be used?
© 2025 All rights reserved
, 2 | Page
A. A pressure switch. C. A jockey pump
B. An excess pressure pump. D. All of the above Ans: — B. An
excess pressure pump
What is used on a butterfly valve from being opened or closed too
quickly?
A. A Stuffing box C. A gear operator
B. A resilient wedge D. A chain lock Ans: — C. A gear operator
A dry pilot line must be constructed of?
A. Schedule 40 pipe
B. cast iron pipe
C. Galvanized steel or copper tubing
D. Cast iron or copper tubing Ans: — C. Galvanized steel or copper
tubing
The proper device to be used on a dry pipe alarm line to give an
electrical alarm when the valve trips would be a ____
A. Flow switch. C. Monitor switch
B. Pressure switch. D. A or B Ans: — B. Monitor switch
An electrical monitor is being placed on the alarm line of an alarm
valve. There is a retard chamber in the trim. That electrical
monitor would be a ___
A. Flow switch
B. Monitor switch
C. Pressure switch
© 2025 All rights reserved
