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Colour Television Systems – 1 – 4

16. The sync pulses are obtained by …

(a) dividing colour sub-carrier
(b) Using a separate oscillator
(c) using CB signal
(d) using sweep signal

ANSWER

EXPLANATION

17. Reference phase of the sub-carrier in NTSC is …………. clockwise from –(B-Y).

(a) 0 degree
(b) 45 degree
(c) 57 degree
(d) 90 degree

ANSWER

EXPLANATION

18. In D-PAL , D stands for ………

(a) deep
(b) data
(c) delay
(d) dual

ANSWER

EXPLANATION

19. Vertical resolution in SECAM is …………. percent of that in NTSC.

(a) 100
(b) 75
(c) 50
(d) 25

ANSWER

EXPLANATION

20. R-Y signal changes phase in PAL on alternate lines by ………….

(a) 45 degree
(b) 90 degree
(c) 180 degree
(d) 270 degree

ANSWER

EXPLANATION

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