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Measurements and Instrumentation

Q1: 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 either (a) or (c)

ANS:B - the difference between the frequencies of the two signals is one fifth of hertz

No answer description is available. 



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