Traffic Signal Technician Level II (Latest 2024 / 2025 Update) Questions and Verified Answers | Grade A | 100% Correct

Traffic Signal Technician Level II (Latest 2024 / 2025 Update) Questions and Verified Answers | Grade A | 100% Correct Q: Check for proper operating DC voltage, check for the absence of red on a phase that does not have green, yellow, or walk, check on a simultaneous are functions that are provided by both - Answer: CMU and MMU Q: What is the purpose of relays in a traffic signal system? Answer: to transfer the outputs from one component to another Q: What device minimizes the amount of voltage that might be available at a pedestrian push button should the button malfunction? Answer: Isolator Q: Which of the following combinations would cause the signal to enter flashing mode according to NEMA? Answer: green & yellow yellow & red walk & yellow Q: What feature is included in the 170 or 2070 monitors vs. the NEMA monitor? Answer: plug in Q: Which group of features best describes why malfunction monitoring units are more advanced then conflict monitors? Answer: ethernet connections monitoring SDLC communications RS-232 communications port Q: Which type of power supply lines are attached from the power supply (service) inside the power panel? -120 v, 40 H, single phase, AC+ and AC- - 120 v, 60 H, single phase DC+ and DC- - 120 v, 60 H, single phase AC+ and AC- - 240 v, 60 H, single phase AC+ and AC- Answer: 120 v, 60H, single phase, AC+ and AC- Q: What is NOT an improved feature of the NEMA TS-2 power supply, when compared to the NEMA TS-1 power supply? Answer: 24 V DC power for solar panels Q: At what time can a mercury contactor be disposed of in a typical trash collection receptacle? Answer: it can never happen Q: List what is a part of the permanent emergency generator system? Answer: uninterrupted supply of power direct connection to the power supply panel external fuel source Q: What is a direct current (DC)? Answer: an electrical current that has a unidirectional flow of electric charge Q: A transformer/rectifier is used to supply __________ VDC to electronic components? Answer: 24 Q: What type of circuit is the current through each of the components the same? Answer: series Q: Voltage is the electrical driver that moves what type of charged electrons through wires and electrical devices? Answer: