Television Engineering MCQs

Question 1

TV transmitters of satellites use

Accepted Answer

vidicon

Answer

image orthicon

Answer

CRT

Answer

photoelectric cell

Question 2

One of the advantages of using aluminium screens in modern picture tubes is to

Accepted Answer

provide brighter pictures

Answer

protect internal aquadag coating

Answer

protect the flourescent material

Answer

increase persistence of vision

Question 3

The output of the vertical amplifier, applied to the yoke in a TV receiver, consists of

Accepted Answer

a sawtooth current

Answer

direct current

Answer

amplified vertical sync pulses

Answer

a sawtooth voltage

Question 4

An 'ion spot' on the CRT screen is caused by

Accepted Answer

ion bombardment of the flourescent screen

Answer

excessive screen brightness

Answer

high line voltage

Answer

high electron velocity

Question 5

Ghost images are produced on the screen of a TV receiver when

Accepted Answer

both direct and reflected signals are received

Answer

brightness control is misadjusted

Answer

contrast control is under-adjusted

Answer

centring magngent is misadjusted

Question 6

In the receiving aerial system, rhombic aerials are preferred because

Accepted Answer

they are cheaper

Answer

their gain is high

Answer

they can be installed at smaller heights

Answer

the large gound plane below them makes them immune to static noise

Question 7

In strong-signal areas, a suitable receiver antenna would be a

Accepted Answer

Yagi or rabbit-ear antenna

Answer

simple dipole antenna

Answer

short lead-in with a signal splitter

Answer

long lead-in with a booster

Question 8

In fringe areas, a suitable receiving antenna would be a

Accepted Answer

high-gain Yagi antenna with rotor

Answer

simple dipole

Answer

turnstile

Answer

high-gain V-antenna

Question 9

For satisfactory reception in farfringe areas, it is often necessary to use

Accepted Answer

a MATV system

Answer

a CATV system

Answer

interference filters

Answer

an all-channel antenna