Traffic Control Technician Chap 1-4 Questions And Answers With Real Tests

Traffic Control Technician Chap 1-4 Questions And Answers With Real Tests
IMSA - ANSWER The International Municipal Signal Association (IMSA) is the oldest
known association of its kind in the world. The organization originated in 1896 and
counts Thomas A. Edison and the Edison Electric Company among its esteemed
members. Today, IMSA certifies tens of thousands of technicians and stands as the
most regarded name in public safety.
Power formula - ANSWER P = I x E
P = Power (watts)
I = current (amps)
E= voltage (volts)
Electric current types - ANSWER DC = direct current - electrons flow in one direction
AC = alternating current - electrons switch directions
Series circuit - ANSWER One string, current consistent at all points, only one path to
flow
Parallel circuit - ANSWER Voltage remains consistent, multiple strings. Traffic signal
indications wired in parallel
Combination - both series and parallel - ANSWER Traffic signal loop detection can be
wired in combination, series, or parallel
Bonding - ANSWER Connected to establish electrical continuity and conductivity.
Ensures they are all continuous on an effective ground fault current path

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