Television Engineering MCQs

Question 1

The purpose of blanking pulses is to

Accepted Answer

make the retraces invisible

Answer

ensure a unifortn scanning rate

Answer

avoid flickering effect

Answer

none of these

Question 2

Wavelength of 440 nm in Armstrongs is

Accepted Answer

440 x 102

Answer

440 x 108

Answer

4400

Answer

none of these

Question 3

Colour represented by 520 nm is approximately

Accepted Answer

red

Answer

green

Answer

blue

Answer

violet

Question 4

If you lose red output of a particular colour system, white elements will

Accepted Answer

look cyan

Answer

vanish

Answer

become black

Answer

none of these

Question 5

Three main factors used to distinguish one colour from another are

Accepted Answer

hue, saturation and sluminance

Answer

wavelength, luminance and chrominance

Answer

wavelength, hue andsaturation

Answer

brightness, contrast and wavelength

Question 6

Which of the following expression is wrong?

Accepted Answer

colour subcarrier is precisely 3.58 MHz

Answer

Cyan + Magenta + Yellow = White

Answer

Red + Green + Blue = White

Answer

none of these

Question 7

The polarities of I and Q signals for red primary are

Accepted Answer

(+ ye) for 1 and Q both

Answer

(+ ve) for 1 Q (? ve) for Q

Answer

(? ve) for I and (+ ye) for Q

Answer

none of these

Question 8

Phase of the red vector with respect to positive (B ? Y) axis is

Accepted Answer

1040

Answer

76?

Answer

14?

Answer

none of these

Question 9

Phase of the blue vector with respect to positive (B ? Y) axis is

Accepted Answer

12?

Answer

135?

Answer

102?

Answer

none of these