6. In a colour picture tube, the three beams coverage to a point ………….
(a) at shadow mask
(b) at screen
(c) between G-1 and G-2
(d) at internal aquadag coating
7. FST gives better contrast because ………….
(a) it reduces reflection
(b) it allows more beam current
(c) it produces more deflection
(d) it uses LCDs
8. Aquadag coatings form a ………….. in a picture tube.
(a) capacitor
(b) resistor
(c) inductor
(d) transformer
9. The number of guns in a colour picture tube is ……..
(a) 2
(b) 3
(c) 4
(d) 5
10. Pincushion effect in a colour picture tube can be corrected by …………….
(a) magnetic ring
(b) current through deflection coils
(c) current through convergence coils
(d) colour purity adjustment
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Television Picture Tubes » Exercise - 1 6. In a colour picture tube, the three beams coverage to a point …………. (a) at shadow mask (b) at screen (c) between G-1 and G-2 (d) at internal aquadag coating- Television Picture Tubes » Exercise - 1 4. The first crossover point in a picture tube is between ………….. and ………….. (a) G-1, G-2 (b) G-3, G-4 (c) shadow mask (d) screen
- Television Picture Tubes » Exercise - 1 10. Pincushion effect in a colour picture tube can be corrected by ……………. (a) magnetic ring (b) current through deflection coils (c) current through convergence coils (d) colour purity adjustment
- Television Display Systems » Exercise - 1 2. Pincushion effect in a colour picture tube can be corrected by : (a) Magnetic ring (b) Current through deflection coils (c) Colour purity adjustments (d) Currents through convergence coils
- Television Picture Tubes » Exercise - 1 2. Which colour tube has the maximum transparency for the beams to reach the screen ………… (a) delta gun (b) PIL (c) trinitron (d) none of these