Question

Typical values for a distributed parameter delay line are ________

(a) Zo = 10 Mῼ and td = 10 nsec/m

(b) Zo = 1 kῼ and td = 500 nsec/m

(c) Zo = 1000 ῼ and td = 180 nsec/m

(d) Zo = 100 Gῼ and td = 275 nsec/m

This question was addressed to me in an interview for internship.

I need to ask this question from Delay Line in portion Oscilloscopes of Electrical Measurements

Answer 1

Right option is (c) Zo = 1000 ῼ and td = 180 nsec/m

Best explanation: For the distributed parameter delay line in a delay line circuit the typical parameters are the characteristic impedance which is Zo = 1000 ῼ and the delay time which is td = 180 nsec/m.