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Questions and Verified Answers |
100% Correct | Grade A
Question:
When an elevator constructor describes a normal open contact or a making
contact he or she is describing the same contact configuration.
Answer:
true
Question:
As current flows through a relay's coil _______________________ generated
by the coil will pull or pick the relay's armature .
Answer:
Magnetic field
,Question:
The most common relay used today is the plug type.
Answer:
True
Question:
The majority of today's set / reset work by using two independent coils
mounted to a common relay base .
Answer:
True
Question:
What prevents two or more relays from becoming energized or picked
electrically at the same time .
Answer:
Electrical interlock
Question:
What allows current to flow in only one direction .
Answer:
Diode
, Question:
In a DC circuit , diodes that have a negative voltage on the bar side of the
diode will make this diode what?
Answer:
Forward Bias
Question:
Dashpots are timers that use oil flow to control their tripping time .
Answer:
True
Question:
Timing circuits that use capacitors and resistors ( RC networks ) are limited
because the timing is not adjustable.
Answer:
false
Question:
When the main line is referred to as " cold or dead " it means there is no
power to the elevator controller or drive.
Answer:
True