Television Engineering MCQs

Question 1

Gain of IF section in a television receiver

Accepted Answer

can be varied with AGG bias control

Answer

depends upon the design and cannot be changed

Answer

is of the order of 1000 or so

Answer

none of these

Question 2

In split-sound receivers, sound information is extracted form

Accepted Answer

first sound IF

Answer

second sound IF

Answer

the output of video-detector stage

Answer

none of these

Question 3

Irrespective of the channel tuned in, secnd sound IF is

Accepted Answer

difference between picture IF and sound IF

Answer

4.5 MHz

Answer

5.5 MHz

Answer

none of these

Question 4

Gain of video amplifier in a TV receiver determines

Accepted Answer

the contrast in the scene

Answer

the brightness of the picture

Answer

the sharpness in the picture

Answer

none of these

Question 5

Higher the gain of video amplifier

Accepted Answer

higher the contrast is

Answer

higher the brightness is

Answer

lesser the contrast is

Answer

lesser the brightness

Question 6

Brightness control is located in

Accepted Answer

the grid-cathode circuit of picture-tube

Answer

the audio section

Answer

the video section

Answer

the horizontal scan section

Question 7

In IF section of a typical television receiver

Accepted Answer

gain for sound signals is less than that for picture-signals

Answer

gain is of the order of 10,0000

Answer

gain for sound signals is greater than that for picture signal

Answer

none of these

Question 8

By adjusting Berightness control, we are actually

Accepted Answer

changing the grid-cathode bias of picture-tube

Answer

changing the gain of video amplifier

Answer

changing the picture-tube anode voltage

Answer

changing amplitude of video signal

Question 9

Fine tuning control in television receiver is

Accepted Answer

a variable condenser

Answer

a preset inductance

Answer

a potentiometer

Answer

none of these