Relay Circuit Questions - Job #3
Here are questions about this relay circuit. You may consult the
assignment text, diagram, picture, and lecture. You may also use a
dictionary, theory book, and code book as you feel necessary. This in intended
as a learning experience.
Questions
1. When power is properly applied, what will happen in this circuit as
drawn?
2. When the "START" pushbutton is pressed, what is the order of
actions that will result?
3. When will the "G" red pilot light be on?
4. When will the "R" red pilot light be on?
5. Can the "R" and "G" pilot lights both ever be off at
the same time when proper voltage is applied to L1 and L2?
6. What is the electrical function of the "C" contacts which are
wired parallel to the start pushbutton?
7. Where are the "C" normally open contacts physically located?
8. Where are the "C" normally closed contacts physically located?
9.If the "C" coil is energized, and the start button is no longer
pressed, what will happen to the "C" relay coil?
10. If the "C" coil is energized and power is removed from the
circuit by a power failure, what will happen to the "C" relay coil
when power is restored?
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When satisfied that you have a complete understanding of this diagram, click
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