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A CRO is used in labs for __________

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A CRO is used in labs for __________

(a) frequency measurement

(b) voltage measurement

(c) current measurement

(d) resistance measurement

I got this question in an online interview.

Question is from Applications of CRO topic in section Oscilloscopes of Electrical Measurements

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Correct choice is (a) frequency measurement

The explanation: A Cathode Ray Oscilloscope is used in the laboratory for the measurement of frequency, phase and period of a signal. Periodic as well as non-periodic relationships of signals can also be studied.

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