SYSTEMS
LEVEL II LESSON 2 QUESTIONS
AND
ANSWERS 2024
NICET
,What he three sides of the fire
Select
are t :triangle?
a.
oneFlames, radiant
rgy, e
b.
eneHeat, smoke,smok
c. Oxygen, fuel, ignition
flames e
d. Oxygen, fuel, radiant
sourc -c
energy
Which of the following is not a product of
Select
combustion?
a. t
one:
b.
Hea s
c. Radiant
Pyrolysi
d.
energy -b
Smoke
Heat isduced when materials ? react to form simpler
Select
pro :compounds.
a.
one
b. y
endothermicall
c.
exothermicall
y
d. -b
intrathermicall
introthermically
y
Smoke particles are usually about
what size?
Select
one:
NICET
,a. Between 0.01 micronsmicro to s
b. Between
about 5,0000.1 microns to n about
c. Between
4,000 microns1 micron to about 4,000
d. Between 1 micron to about
microns - a 5,000
microns
Smoke detectors undergoing UL testing must actuate
obscurati
between . ? per foot
Select
on :
a. -4.% orre
one
b.
0.4 -4
5.Inc
% ct t
c.
0.4 -3.
5% Incorrec
d.
0.5 -5
4.Incorrect
% -d
0.5 4 Correct
A condition where a burning fuel produces smoke without flames
Select
is known as ? .
a.
one: tio
b.
deflagra n
c.
oxidatio
d.
pyrolysisn
Feedba
radiatio -c
ck
During the UL tests, m-powered smoke detectors must
polystyrene
syste fire respond to a
Select
within ? .
a. 1
one:
b. 2
minute
c. 3
minutes
d. 4
minutes -b
minutes
What kind of detector is most appropriate for an elevator lobby
buildin
in an apartment
Select :
g?
a.
one-sampling smoke
b.
AirHeat
detector
c. Radiant -sensing etect
detector
d.
energy-type smoke
fire d - dor
Spot detector
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, What kind of detector is most appropriate for an unenclosed,
unheated parking
garag
e?
Select
one:
a. Air-sampling smoke
detector
b. Heat
detector
c. Radiant energy sensing fire
detector
d. Spot-type smoke
detector - b
Rooms or spaces with high ceilings may be subject to what
condition during a
fire
?
Select
one:
a. Increased
sensitivity
b.
Layering
c. Smoke
condensation
d.
Stratification -
d
The most appropriate type of detection for a
computer room is ? .
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