CRO uses __________ A. 2 delay lines B. 3 delay lines C. 4 delay

cro-uses-a-2-delay-lines-b-3-delay-lines-c-4-delay

CRO uses __________

A. 2 delay lines

B. 3 delay lines

C. 4 delay lines

D. 5 delay lines

The question was posed to me during an interview.

My doubt stems from Delay Line topic in portion Oscilloscopes of Electrical Measurements

Correct choice is A. 2 delay lines

The best I can explain: Cathode Ray Oscilloscope uses two delay lines. They are as follows:

 Lumped parameter delay line and

 Distributed parameter delay line.