CRO is used for measurement of __________ A. AC as well as DC

cro-is-used-for-measurement-of-a-ac-as-well-as-dc

CRO is used for measurement of __________

A. AC as well as DC current

B. AC current only

C. DC current only

D. AC power only

This question was posed to me by my college director while I was bunking the class.

The above asked question is from Applications of CRO in chapter Oscilloscopes of Electrical Measurements

Correct answer is A. AC as well as DC current

To explain I would say: A Cathode Ray Oscilloscope is used for the measurement of AC as well as DC current. It is used for the calculation peak to peak voltage, r.m.s value, duty cycle, etc.