| 103. |
Which of the
following is NOT required for a properly
operating transformer?
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A. |
An alternating
current source connected to the primary coil. |
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Transformers
work because of a changing magnetic field created by an alternating
current connected to the primary coil. |
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B. |
a direct current
source connected to the primary coil. |
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This
will not work. See above.
The Correct Answer is B. |
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C. |
two coils of wire
wound around a common iron core. |
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This
is the design of a transformer. |
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D. |
The wires must be
insulated. |
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The
wires must be insulated. If they are not, the current will flow
through the iron core instead of inducing a current. |
