IMSA Traffic Signal Technician 2 Exam
Questions With Correct Answers
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? |- |CORRECT |ANSWER✔✔-1
On |a |2070 |MMU |monitor |unit, |how |does |the |field |tech |program |allowable |phases? |- |CORRECT
|ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-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? |- |
CORRECT |ANSWER✔✔-Install |copper |jumpers |and |soldering |them |on |the |program |card
According |to |best |maintenance |practices, |how |often |should |CMU/MMU |be |tested? |- |CORRECT
|ANSWER✔✔-Annually
The |MMU |indicates |a |RED-FAIL |fault |on |phase |6. |Why? |- |CORRECT |ANSWER✔✔-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 |- |CORRECT |ANSWER✔✔-Controller |health
When |a |Technician |is |recertifying |the |CMU/MMU |at |an |intersection, |what |should |the |
technician |do |to |have |the |intersection |exit |flash? |- |CORRECT |ANSWER✔✔-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? |-
|CORRECT |ANSWER✔✔-Red |Fail
Which |of |the |following |can |be |programmed |on |an |MMU |to |latch |after |a |fault |occurs? |- |
CORRECT |ANSWER✔✔-Field |check
How |often |is |an |MMU's |clock |updated |from |the |controller? |- |CORRECT |ANSWER✔✔-Once |a |
second
In |a |signal |cabinet, |on |the |signal |monitor, |what |does |a |field |check |indicate? |- |CORRECT |
ANSWER✔✔-The |signal |indications |don't |match |the |controller |output |for |a |phase
A |NEMA |CMU/MMU |uses |a |program |card |to |tell |the |monitor |which |phases |are |permitted |to |
run |together. |Which |answer |is |CORRECT? |- |CORRECT |ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-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? |- |CORRECT |
ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-1
Questions With Correct Answers
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? |- |CORRECT |ANSWER✔✔-1
On |a |2070 |MMU |monitor |unit, |how |does |the |field |tech |program |allowable |phases? |- |CORRECT
|ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-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? |- |
CORRECT |ANSWER✔✔-Install |copper |jumpers |and |soldering |them |on |the |program |card
According |to |best |maintenance |practices, |how |often |should |CMU/MMU |be |tested? |- |CORRECT
|ANSWER✔✔-Annually
The |MMU |indicates |a |RED-FAIL |fault |on |phase |6. |Why? |- |CORRECT |ANSWER✔✔-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 |- |CORRECT |ANSWER✔✔-Controller |health
When |a |Technician |is |recertifying |the |CMU/MMU |at |an |intersection, |what |should |the |
technician |do |to |have |the |intersection |exit |flash? |- |CORRECT |ANSWER✔✔-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? |-
|CORRECT |ANSWER✔✔-Red |Fail
Which |of |the |following |can |be |programmed |on |an |MMU |to |latch |after |a |fault |occurs? |- |
CORRECT |ANSWER✔✔-Field |check
How |often |is |an |MMU's |clock |updated |from |the |controller? |- |CORRECT |ANSWER✔✔-Once |a |
second
In |a |signal |cabinet, |on |the |signal |monitor, |what |does |a |field |check |indicate? |- |CORRECT |
ANSWER✔✔-The |signal |indications |don't |match |the |controller |output |for |a |phase
A |NEMA |CMU/MMU |uses |a |program |card |to |tell |the |monitor |which |phases |are |permitted |to |
run |together. |Which |answer |is |CORRECT? |- |CORRECT |ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-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? |- |CORRECT |
ANSWER✔✔-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? |- |CORRECT |ANSWER✔✔-1
