with Correct Answers. Latest 2026-
2027. Graded A
______________ must provide head protection when working in areas
where there is a possible danger of head injury from impact, or from falling
or flying objects, or from electrical shock and burns.
OSHA 1926.100(b)(1) - ANSThe employer
A 20 X 20' ft room with a 20'ft high ceiling requires at a minimum a ___
ceiling mounted strobe - ANS30 candela
A 200 ohm resistor draws 2 amps of current when connected to a power
source. What is the voltage applied to the resistor? - ANS400 volts
A 24VDC bell draws 0.8 amps of current and it is located 500'ft from the fire
alarm control panel. According to the manufacturer, the bell will operate
with no more than a 10% voltage drop. Assuming a temperature of 70*F,
what is the smallest sized, coated solid copper conductor that shall be used
to provide power to the bell?
-Find Chapter 9 table 8 in the NEC, plug ohm values into your equation E =
I*R and solve - ANS12 AWG
1
,A ceiling mounted horn/strobe light was selected to be installed on a 40'ft
high ceiling. Which mounting method best matches NFPA 72
requirements? - ANSSuspended horn/strobe light at or below 30'ft
A ceiling shall be treated as a smooth celing if the beams project no more
than ____ below the ceiling - ANS4"inches
A circuit contains 2 resistors connected in series. When 24VDC are applied
to the circuit, 2.4 amps of current are drawn. What is the total resistance of
the circuit?
-R = E/I - ANS10 ohms
A circuit contains three resistors in parallel. There values are R1=300,
R2=300 and R3=300. What is the total resistance of the circuit? - ANS100
ohms
A diode's function is? - ANSTo only allow current to flow one way
A fire alarm system with a pre-signal feature installed on the protected
premises shall be permitted if ______________.
NFPA 72 - 23.8.1.2.1 - ANSapproved by the AHJ
A fixed-temperature, non-restorable spot type heat detector shall be tested
____ from initial installation. - ANS15 years after
2
, A heat detector with a listed spacing of 50'ft will be installed. What spacing
shall be used for a **20'ft** ceiling that is smooth and flat? - ANS32'ft -
because detectors at or above 20'ft shall multiply the listed detector
spacing by 0.64. i.e.(50x0.64=32)
A horn was installed to provide notification for a sleeping area. According to
NFPA 72, what is the minimum sound level, in dB, allowed above average
ambient sound level? - ANS15dB
A horn will be installed in the hallway of a Holiday Inn (hotel). According to
NFPA 72, what is the minimum mounting height above the finished floor? -
ANS90"inches
A parallel circuit has a total circuit current of 2 amps. What is the applied
circuit voltage if total resistance is 6 Ohms?
E=IxR - ANS12 volts
A pressure supervisory signal-initiating device for a dry-pipe sprinkler
system shall indicate ______________.
NFPA 72 - 17.16.2.2.2(A) - ANSBoth high and low pressure conditions
A Room is 200' long and 150' wide and the 8' high ceiling is smooth and
flat. A spot type heat detector has been selected that is listed for a 50'
maximum spacing between detectors. According to NFPA 72 how many
detectors will be needed to protect this room?
3