Exam Questions and Answers |
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The coil will not pull in despite measuring full line voltage directly across
it. - ANSWER ✔✔Open Coil
What happens when the switch is closed, then opened? - ANSWER
✔✔Relay 1 off-delays, Relay 2 drops immediately
What will normally happen if an unintentional ground is introduced in a
grounded control system? - ANSWER ✔✔A fuse will blow
, Condition of relays 2F1-3 when the car is traveling up between the
second and third floors. - ANSWER ✔✔Self Holding
What happens if contact 1F2 7/9 (1F2) fails to close when the car runs
down? - ANSWER ✔✔The car will not run down
Which contact(s) change the direction of the door motor when opening
and closing? - ANSWER ✔✔O1,02,C1, AND C2
What should the stopping distance be if a car speed were 100 FPM? -
ANSWER ✔✔24 inches
What should the stopping distance be if a car speed were 125 FPM? -
ANSWER ✔✔30 inches
What is the function of a retiring cam? - ANSWER ✔✔Actuate landing
interlocks
What happens when a retiring cam lifts? - ANSWER ✔✔Locks Doors
What is the location of the 1F1 4/6 contact? - ANSWER ✔✔(1 B6)
What is the location of the 1F1 8-9 contact? - ANSWER ✔✔(2 B2)
How much dc voltage will a single phase, full-wave rectifier with 134
VAC input produce? - ANSWER ✔✔120 (134 vac x .9 = 120vdc)