EEST110 MIDTERM REVIEW (J) QUESTIONS AND ANSWERS
The device used primarily for testing UTP cable for shorts, crossed pairs, and improper wiring is the
______ - CORRECT ANSWER✅✅wire map tester
The root cause of an electrical/electronic failure resulting from harmonics is most likely ______ -
CORRECT ANSWER✅✅poor power quality
When using a systematic approach to troubleshooting, the first step should be to ______ - CORRECT
ANSWER✅✅interview the customer about the problem
True or False: Noise in the 150kHz to 20MHz range is usually caused by fluorescent lighting - CORRECT
ANSWER✅✅False
When using an oscilloscope to check power supply ripple, the oscilloscope AC/DC mode control should
be set to _____ - CORRECT ANSWER✅✅AC
The service manual for a piece of equipment shows that it is designed to operate on 120VAC. What is
the minimum voltage that can be applied to this equipment and still have it operate properly? -
CORRECT ANSWER✅✅108V
When measuring the ripple in the output of an 18VDC power supply, you measure 0.08V. What
percentage of ripple is this? - CORRECT ANSWER✅✅0.4 %
The root cause of an electrical/electronic failure resulting from loose connections or vibration is most
likely____ - CORRECT ANSWER✅✅improper installation
True or False: If the contacts on a relay are shown closed on a schematic diagram, when the relay is
energized, the contacts remain closed. - CORRECT ANSWER✅✅False
A circuit that measures infinite resistance and zero current is _______ - CORRECT ANSWER✅✅an open
circuit
, When troubleshooting an AFP-200 fire alarm control panel to find a problem involving an invalid reply
from a single field device, which of the following causes can be eliminated? - CORRECT
ANSWER✅✅reverse SLC polarity at the AFP-200
A hot, smoky unit or device is often a sign of a[n] _____ - CORRECT ANSWER✅✅short circuit
A circuit board should be replaced only when _______ - CORRECT ANSWER✅✅the board fails to
generate the proper output signal(s) when the input signal(s) are known to be good
To achieve proper operation when using an RTM-8 module in conjunction with an AFP-200 fire alarm
control panel, it is required that ______ - CORRECT ANSWER✅✅jumper JP5 be cut
Other than the Underwriters Laboratories, the _____ is an approved testing laboratory for materials
supplied and sold in the United States. - CORRECT ANSWER✅✅Canadian Standards Association [CSA}
The National Electrical Code is NFPA - CORRECT ANSWER✅✅70
Standards developed over the years that companies use to deal with complexities related to systems
and devices is called a[n] _____ standard. - CORRECT ANSWER✅✅industry
The type of code or standard that carries the rule-of-law is a[n] _____ standard. - CORRECT
ANSWER✅✅adopted
The person or agency that decides the acceptability of the systems and devices being installed in
accordance with code requirements is the _______ - CORRECT ANSWER✅✅authority having
jurisdiction
If an item has been substituted for the original and it has been determined that such item is of equal or
better quality, and sufficient documentation is provided to the AHJ to demonstrate same, the item is
determined to be _________. - CORRECT ANSWER✅✅equivalent
The device used primarily for testing UTP cable for shorts, crossed pairs, and improper wiring is the
______ - CORRECT ANSWER✅✅wire map tester
The root cause of an electrical/electronic failure resulting from harmonics is most likely ______ -
CORRECT ANSWER✅✅poor power quality
When using a systematic approach to troubleshooting, the first step should be to ______ - CORRECT
ANSWER✅✅interview the customer about the problem
True or False: Noise in the 150kHz to 20MHz range is usually caused by fluorescent lighting - CORRECT
ANSWER✅✅False
When using an oscilloscope to check power supply ripple, the oscilloscope AC/DC mode control should
be set to _____ - CORRECT ANSWER✅✅AC
The service manual for a piece of equipment shows that it is designed to operate on 120VAC. What is
the minimum voltage that can be applied to this equipment and still have it operate properly? -
CORRECT ANSWER✅✅108V
When measuring the ripple in the output of an 18VDC power supply, you measure 0.08V. What
percentage of ripple is this? - CORRECT ANSWER✅✅0.4 %
The root cause of an electrical/electronic failure resulting from loose connections or vibration is most
likely____ - CORRECT ANSWER✅✅improper installation
True or False: If the contacts on a relay are shown closed on a schematic diagram, when the relay is
energized, the contacts remain closed. - CORRECT ANSWER✅✅False
A circuit that measures infinite resistance and zero current is _______ - CORRECT ANSWER✅✅an open
circuit
, When troubleshooting an AFP-200 fire alarm control panel to find a problem involving an invalid reply
from a single field device, which of the following causes can be eliminated? - CORRECT
ANSWER✅✅reverse SLC polarity at the AFP-200
A hot, smoky unit or device is often a sign of a[n] _____ - CORRECT ANSWER✅✅short circuit
A circuit board should be replaced only when _______ - CORRECT ANSWER✅✅the board fails to
generate the proper output signal(s) when the input signal(s) are known to be good
To achieve proper operation when using an RTM-8 module in conjunction with an AFP-200 fire alarm
control panel, it is required that ______ - CORRECT ANSWER✅✅jumper JP5 be cut
Other than the Underwriters Laboratories, the _____ is an approved testing laboratory for materials
supplied and sold in the United States. - CORRECT ANSWER✅✅Canadian Standards Association [CSA}
The National Electrical Code is NFPA - CORRECT ANSWER✅✅70
Standards developed over the years that companies use to deal with complexities related to systems
and devices is called a[n] _____ standard. - CORRECT ANSWER✅✅industry
The type of code or standard that carries the rule-of-law is a[n] _____ standard. - CORRECT
ANSWER✅✅adopted
The person or agency that decides the acceptability of the systems and devices being installed in
accordance with code requirements is the _______ - CORRECT ANSWER✅✅authority having
jurisdiction
If an item has been substituted for the original and it has been determined that such item is of equal or
better quality, and sufficient documentation is provided to the AHJ to demonstrate same, the item is
determined to be _________. - CORRECT ANSWER✅✅equivalent
