Which of the following is not a component of Memory tube display ?
(A) Flooding gun
(B) Collector
(C) Ground
(D) Liquid Crystal


Answer: (D)

Explanation: Main components of memory tube display are:

1. Flood gun
2. Primary gun
3. Writing Beam
4. Collector
5. Storage grid
6. Screen
7. Focussing & deflection system
8. Flood electron
9. Ground or base

Only Liquid crystal is not enlisted here and it is not the display component in memory tube.
So, option (D) is correct.

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