Television Picture Tubes – 1 – 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

ANSWER

EXPLANATION

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

ANSWER

EXPLANATION

3. The most suitable device at present for solid state picture tube is …………..

(a) LED
(b) quartz crystal
(c) silicon
(d) 
LCD

ANSWER

EXPLANATION

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

ANSWER

EXPLANATION

5. Phosphors glow if electrons hitting them are of ………….. velocity.

(a) high
(b) low
(c) zero
(d)
 negative

ANSWER

EXPLANATION

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