Nicet level 1 Study Guide / Revised
Questions and Answers / Sure 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) - The employer
A 20 X 20' ft room with a 20'ft high ceiling requires at a minimum a ___ ceiling mounted strobe -
30 candela
A 200 ohm resistor draws 2 amps of current when connected to a power source. What is the voltage
applied to the resistor? - 400 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 - 12 AWG
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? - Suspended 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 -
4"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 - 10 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? - 100 ohms
A diode's function is? - To 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 - approved by the AHJ
A fixed-temperature, non-restorable spot type heat detector shall be tested ____ from initial
installation. - 15 years after
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? - 32'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? - 15dB
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? - 90"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 - 12 volts
A pressure supervisory signal-initiating device for a dry-pipe sprinkler system shall indicate
______________.
, NFPA 72 - 17.16.2.2.2(A) - Both 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?
x = - 12
A room measures 60'ft long by 60'ft wide and has a smooth flat ceiling 10'ft high. A spot-type heat
detector with a listed spacing of 30'ft was selected to be installed. According to NFPA 72, what is the
minimum number of detectors required?
x 60/30 = - 4
A separate storage battery and separate automatic charger shall be provided for starting the engine-
driven generator and shall ___________________.
NFPA 72 10.6.11.7 - not be used for any other purpose
A series circuit has two resistors with values of R1 = 300 ohms and R2 = 200 ohms. Calculate the total
current of the circuit when 24VDC is applied to the circuit. - 0.048A = (I=V/R)
A signal that transmits several discrete bits of information is a _________.
NFPA 72 Chapter 3 - Definitions - coded signal
A sloping ceiling is a ceiling that has a slope of more than _____ - 1 in 8
According to NFPA 72 how many spot type heat detectors are required for a space that is 80' long and
55 floor wide with a smooth 10' ceiling? the detector is listed for a maximum space between detectors
of 30' - 6
Questions and Answers / Sure 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) - The employer
A 20 X 20' ft room with a 20'ft high ceiling requires at a minimum a ___ ceiling mounted strobe -
30 candela
A 200 ohm resistor draws 2 amps of current when connected to a power source. What is the voltage
applied to the resistor? - 400 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 - 12 AWG
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? - Suspended 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 -
4"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 - 10 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? - 100 ohms
A diode's function is? - To 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 - approved by the AHJ
A fixed-temperature, non-restorable spot type heat detector shall be tested ____ from initial
installation. - 15 years after
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? - 32'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? - 15dB
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? - 90"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 - 12 volts
A pressure supervisory signal-initiating device for a dry-pipe sprinkler system shall indicate
______________.
, NFPA 72 - 17.16.2.2.2(A) - Both 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?
x = - 12
A room measures 60'ft long by 60'ft wide and has a smooth flat ceiling 10'ft high. A spot-type heat
detector with a listed spacing of 30'ft was selected to be installed. According to NFPA 72, what is the
minimum number of detectors required?
x 60/30 = - 4
A separate storage battery and separate automatic charger shall be provided for starting the engine-
driven generator and shall ___________________.
NFPA 72 10.6.11.7 - not be used for any other purpose
A series circuit has two resistors with values of R1 = 300 ohms and R2 = 200 ohms. Calculate the total
current of the circuit when 24VDC is applied to the circuit. - 0.048A = (I=V/R)
A signal that transmits several discrete bits of information is a _________.
NFPA 72 Chapter 3 - Definitions - coded signal
A sloping ceiling is a ceiling that has a slope of more than _____ - 1 in 8
According to NFPA 72 how many spot type heat detectors are required for a space that is 80' long and
55 floor wide with a smooth 10' ceiling? the detector is listed for a maximum space between detectors
of 30' - 6
