Correct option is D
· A klydonograph is specifically designed to measure high-speed surges and transients, such as those caused by lightning, in transmission lines.
· A klydonograph is a device that records electrical voltage surges in power lines as photographic images. It was developed by John F. Peters to study the effects of lightning on power lines. The word "klydonograph" was first used in 1924.
· The klydonograph uses a photographic film that's dusted with sulfur to record the surge. The film produces patterns called Lichtenberg figures, which are created by surface corona discharges.
· The klydonograph is attached to electric power lines to estimate the electrical characteristics of lightning.
