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Speed of signal in transmission line is equal to the speed of light.

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Speed of signal in transmission line is equal to the speed of light.

(a) True

(b) False

This question was posed to me during an interview for a job.

This interesting question is from Transmission Line Basics in portion Transmission Lines of Avionics

1 Answer

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Best answer
Correct answer is (b) False

The best explanation: The velocity of propagation of a signal in a cable is less than the velocity of propagation of light in free space by a fraction called the velocity factor (VF), which is the ratio of the velocity in the transmission line Vp to the velocity in free space Vc.

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