Television Picture Tubes » Exercise – 1
1. Speed of vertical deflection in a picture tube is ………….. the speed of horizontal deflection.
(a) equal to
(b) faster than
(c) slower than
(d) any of these
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
3. The most suitable device at present for solid state picture tube is …………..
(a) LED
(b) quartz crystal
(c) silicon
(d) LCD
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
5. Phosphors glow if electrons hitting them are of ………….. velocity.
(a) high
(b) low
(c) zero
(d) negative
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