Both X and Y plates of a CRO are excited by ac signals.
The display is an ellipse which makes one rotation in 5 seconds.
This means that
A. the frequency of one input is 5 times that of other
B. the difference between the frequencies of the two signals is one fifth of hertz
C. the difference between the frequencies of the two signals is 5 Hz
D. none of the above
Show Answer
Answer: B
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