1.

In crt cathode required ------- kilo volt supplyl​

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ong>EXPLANATION:

The cathode-ray tube (CRT) is a vacuum tube containing one or more ELECTRON guns, the beams of which are manipulated to display images on a phosphorescent screen.[2] The images may represent electrical WAVEFORMS (OSCILLOSCOPE), pictures (television set, computer monitor), radar targets, or other phenomena. A CRT on a television set is commonly called a picture tube. CRTs have also been used as memory devices, in which case the screen is not INTENDED to be visible to an observer.



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