1|Page
TRAFFIC SIGNAL FIELD TECHNICIAN ACTUAL EXAM
NEWEST 2025/2026 COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS | ALREADY
GRADED A+
Which of the following is a 2 terminal device? - ANSWER-
diode
What is ideal for switching both small and large AC
voltages and currents for power control purposes? -
ANSWER-TRIAC
How much current would flow if a circuit has a voltage of 4
volts and a resistance of 4 ohms? (voltage/resistance =
current) - ANSWER-one amp
,2|Page
List semiconductor devices? - ANSWER-diodes and
transistors
SCRs and TRIACs
LEDs
What is a characteristic that can be applied to a digital
multimeter? - ANSWER-automatic ranging of
measurements
To avoid injury, at what voltage should a current
measurement NOT be attempted on an open circuit? -
ANSWER-above the rated voltage of the meter
,3|Page
Pertaining to multimeter, what does VOM stand for? -
ANSWER-volt/ohm meter
To make sure that the multimeter does not alter the
operation of the circuit when it is used to measure current,
the impedance of the meter must be as low as possible.
For measurements of around an amp, the resistance of a
meter should be what? - ANSWER-less than an ohm
When using the multimeter, what step should be
completed first? - ANSWER-ensure that the leads are
placed in the correct sockets
, 4|Page
Most electrical codes require how many ohms to ground
for electrical service installations? - ANSWER-25 ohms
Resistance of meters used to measure current are
normally? - ANSWER-very low
What does OTDR mean? - ANSWER-optical time domain
reflectometer
In what type of controller is the cycle sometimes called a
"dial" because a rotating dial is used to control the timing
of the various signal displays? - ANSWER-older
electromechanical
TRAFFIC SIGNAL FIELD TECHNICIAN ACTUAL EXAM
NEWEST 2025/2026 COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS | ALREADY
GRADED A+
Which of the following is a 2 terminal device? - ANSWER-
diode
What is ideal for switching both small and large AC
voltages and currents for power control purposes? -
ANSWER-TRIAC
How much current would flow if a circuit has a voltage of 4
volts and a resistance of 4 ohms? (voltage/resistance =
current) - ANSWER-one amp
,2|Page
List semiconductor devices? - ANSWER-diodes and
transistors
SCRs and TRIACs
LEDs
What is a characteristic that can be applied to a digital
multimeter? - ANSWER-automatic ranging of
measurements
To avoid injury, at what voltage should a current
measurement NOT be attempted on an open circuit? -
ANSWER-above the rated voltage of the meter
,3|Page
Pertaining to multimeter, what does VOM stand for? -
ANSWER-volt/ohm meter
To make sure that the multimeter does not alter the
operation of the circuit when it is used to measure current,
the impedance of the meter must be as low as possible.
For measurements of around an amp, the resistance of a
meter should be what? - ANSWER-less than an ohm
When using the multimeter, what step should be
completed first? - ANSWER-ensure that the leads are
placed in the correct sockets
, 4|Page
Most electrical codes require how many ohms to ground
for electrical service installations? - ANSWER-25 ohms
Resistance of meters used to measure current are
normally? - ANSWER-very low
What does OTDR mean? - ANSWER-optical time domain
reflectometer
In what type of controller is the cycle sometimes called a
"dial" because a rotating dial is used to control the timing
of the various signal displays? - ANSWER-older
electromechanical
