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Draw neat block diagram of CRO and explain its functioning comment on role of delay line in CRO.
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Answer: CRO -The cathode ray oscilloscope is an extremely useful and versatile laboratory instrument used for studying wave shapes of alternating currents and voltages as well as for meas­urement of voltage, current, power and frequency.

The block diagram of CRO is shown below : 

 

 A general purpose CRO  consists of …

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