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Monochrome Television Transmitters and Receivers – 1 – 3

11. H-sync pulse is separated from V-sync pulse by employing the circuit :

(a) Multiplier
(b) Differentiator
(c) Subtractor
(d) Integrator

ANSWER

EXPLANATION

12. Pre-emphasis is used to :

(a) Increase RF power
(b) Correct AM into AM VSB
(c) Improve SNR
(d) Convert Fm into PM

ANSWER

EXPLANATION

13. For negative polarity transmission, the polarity of video detector at the output of video detector is :

(a) Positive
(b) Negative
(c) Neither of two
(d) Intermediate

ANSWER

EXPLANATION

14. A trap circuit is a :

(a) Resistor
(b) Capacitor
(c) Tuned circuit
(d) Inductor

ANSWER

EXPLANATION

15. The purpose of sync separator in television receiver is :

(a) To separate horizontal and vertical sync pulses
(b) To separate sync pulses from associated noise
(c) To separate sync pulses from the CVS
(d) None of these

ANSWER

EXPLANATION

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