[amp_mcq option1=”Using a guard ring” option2=”Grading the insulator” option3=”Using long cross arm” option4=”Any of the above” correct=”option1″]<\/p>\n
The correct answer is: A. Using a guard ring<\/strong><\/p>\n A guard ring is an electrical conductor that is placed around the insulator of a high-voltage line. It helps to prevent corona discharge, which can cause power loss and damage to the insulator.<\/p>\n Grading the insulator is a process of applying a thin layer of a different material to the surface of the insulator. This helps to reduce the surface resistance of the insulator and improve its ability to withstand high voltages.<\/p>\n Using a long cross arm is a way of increasing the distance between the conductors of a high-voltage line. This helps to reduce the corona discharge and improve the efficiency of the line.<\/p>\n However, the most effective way to improve string efficiency is to use a guard ring.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”Using a guard ring” option2=”Grading the insulator” option3=”Using long cross arm” option4=”Any of the above” correct=”option1″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[949],"tags":[],"class_list":["post-46048","post","type-post","status-publish","format-standard","hentry","category-transmission-and-distribution","no-featured-image-padding"],"yoast_head":"\n