Television Engineering MCQs

Question 1

For channel 4 if the frequency of picture carrier is 62.25 MHz, then the frequency of sound carrier will be

Accepted Answer

67.75 mhz

Answer

55.25 MHz

Answer

57. 75 MHz

Answer

65.25 MHz

Question 2

Which channel has the highest frequency range?

Accepted Answer

All channels have same frequency range.

Answer

Channel 1

Answer

Channel 7

Answer

Channel 14

Question 3

In the saw tooth wave form for linear scanning

Accepted Answer

complete cycle includes traces and retraces

Answer

the linear rise is for flyback

Answer

beam moves faster duffing traces than retrace

Answer

None of the above

Question 4

A colour camera is

Accepted Answer

a combination of three or four monochrome cameras with optical accessories

Answer

Vidicon camera

Answer

Image orthicon camera

Answer

none of the above

Question 5

The shadow mask in colour TV picture tube is used to

Accepted Answer

ensure that each beam hits own target

Answer

reduced X-ray emission

Answer

increases screen brightness

Answer

none of the above

Question 6

In a TV receiver, the colour killer

Accepted Answer

cuts off the chroma stages during monochrome reception

Answer

prevents colour, over loading

Answer

ensure that no colour is transmitted to monochrome receivers

Answer

makes sure that the colour burst is not mistaken for sync pulses by cutting of reception during the back porch

Question 7

Selectivity is provided and interference is rejected by the

Accepted Answer

RF amplifier

Answer

transmission line

Answer

local oscillator

Answer

Emitter by pass capacitor

Question 8

The contrast control functions to very

Accepted Answer

the gain of the IF amplifier

Answer

the bias on the picture tube grid

Answer

screen brightness

Answer

the gain of the video amplifier

Question 9

Peaking coils function by

Accepted Answer

resonating at certain frequencies with circuit capacitances

Answer

filtering the ripple in the power supply

Answer

trapping adjacent channel interference

Answer

stabilizing transistor operation