VERSION Actual Exam Questions and

IMSA Traffic Signal Technician 2 NEWEST VERSION Actual Exam Questions and Verified Answers Terms in this set (104) Save In a TS2 cabinet, how many times can the MMU experience a "Port 1 Fail" in a 24 hour period before the fault is latched?1 On a 2070 MMU monitor unit, how does the field tech program allowable phases?Remove diode on program card for allowable phases On an MMU, is it possible to tape the reset button to prevent the traffic signal from going into flash?Yes, it by-passes the conflict feature and will not flash On a NEMA CMU program card, how does the signal tech program allowable phases?Install copper jumpers and soldering them on the program card According to best maintenance practices, how often should CMU/MMU be tested?Annually 1 / 3

The MMU indicates a RED-FAIL fault on phase 6.Why?The load switch/switch pack produces no outputs.The purpose of the controller CVM (Controller Voltage Monitor) output is to allow the CMU/MMU to monitor the Controller health When a Technician is recertifying the CMU/MMU at an intersection, what should the technician do to have the intersection exit flash?Replace the CMU/MMU with a newly tested unit Absence of all colors on a load switch will be indicated by what fault on an MMU or MMU2?Red Fail Which of the following can be programmed on an MMU to latch after a fault occurs?Field check How often is an MMU's clock updated from the controller?Once a second In a signal cabinet, on the signal monitor, what does a field check indicate?The signal indications don't match the controller output for a phase 2 / 3

A NEMA CMU/MMU uses a program card to tell the monitor which phases are permitted to run together.Which answer is

CORRECT?

NEMA monitors have wire jumpers missing in all positions, the tech solders the ones in that allow phases to run together.When the controller timings DO NOT match the timing sheet, who should be contacted for correct times?Traffic Engineer An older TS1 cabinet experiences a flash condition but the signal heads are also showing active green, yellow, and red indications. What is the MOST COMMON issue?The mercury contactor is stuck in the normal position.In a Dual-Ring, 8-phase traffic signal controller, how many phases can run in each ring at the same time?1 Observations indicate that vehicles are being detected in one lane and that this is shown on the detection interface unit.However, the controller does not show any detection for that phase.This could be caused by Improper detection phase assignment programming in the controller

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