Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Fire warning system units for commercial use must be listed in accordance with
a. | UL780 | b. | UL864 | c. | UL
985 | d. | UL
995 |
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2.
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Primary power circuits supplying fire ala systems must be protected by circuit break not larger than .
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3.
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The NFPA 72®
Temporal 3 sound pattern for
fire alarm signal is
__ .
a. | three short (1/2 sec.) tones, three long (1 sec.) tones, then a
repeat | b. | three long (1 sec.)
tones, a pause, then a
repeat | c. | three short
(1/2 sec.) tones, a pause, then a repeat | d. | alternating single short (1/2sec.) tones and long (1 sec.)
tones |
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4.
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At 10 feet,
public area audible notification de- vices must have a minimum
rating of .
a. | 65 dBa | b. | 75 dBa | c. | 85
dBa | d. | 95 dBa |
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5.
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Which of the following conduits or cable can-
a. | Attendant
signal | b. | Pre-signal | c. | General signal | d. | Positive alarm sequence |
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6.
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Which of the following conduits or cable can- not be buried?
a. | PVC | b. | Galvanized rigid | c. | Plain steel EMT | d. | UG cable |
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7.
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Commercial fire alarm cables that run from floor to
floor must be
a. | general-purpose
type | b. | water-resistant | c. | rated for riser use | d. | run in PVC conduit |
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8.
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Power-limited
fire alarm circuit conductors must be separated
from nonpower-limited fire alarm circuit conductors by at
least .
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9.
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How many conductors does a Class B SLC re-
quire to reach each device on a circuit?
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10.
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An SLC that consists of a Class A main trunk with a Class B spur
circuit is known as
a
a. | dual SLC | b. | combined
SLC | c. | twin LC | d. | hybrid SL |
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11.
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For smoke chamber definition purposes,
an archway that extends down from the ceiling is considered a(n)
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a. | obstrution | b. | boundary | c. | open
grid | d. | beam pocket |
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12.
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The primary function of a duct smoke detector is to ---
a. | sound an alarm for duct smoke | b. | shut down n associated HVAC system | c. | detect external open-area
fires | d. | disable a music system for
evacuation |
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13.
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a fire alarm
system, a visual or audible
supervisory signal must be
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a. | different from a
visual alarm signal | b. | the same as an
alarm signal | c. | . different from a
trouble
signal | d. | different from the
alarm and trouble signals |
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