Relay Circuit Questions - Job #8
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. Can both relay coils be energized at the same time?
2. What prevents F coil and R coil from being energized simultaneously?
3. When the "F" pushbutton is pressed, will the "F"
relay coil be able to run?
4. If the "R" relay coil is energized, what will be the result if
the "STOP" pushbutton is pressed?
5. If the "F" coil is energized, what will be the result if the
"R" pushbutton is pressed?
6. What action will deenergize the "R" relay coil when it is in
the run mode?
7. Where are overloads typically placed in this relay circuit?
8. Draw this relay circuit with the "F" overload and the
"R" overload in series. (not this diagram)
9. Draw this relay circuit with independent overload protection.
10. What normal action could cause the "F" coil and "R"
coil to energize simultaneously?
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