Television Engineering MCQs

Question 1

To be most effective, a booster amplifier should be installed

Accepted Answer

at the antenna end of the lead-in

Answer

at the receiver end of the lead-in

Answer

half-way between the antenna and the receiver

Answer

between the receiver and contrast control

Question 2

The most effective method for controlling cochannel interference is to use a

Accepted Answer

high-gain antenna with rotor

Answer

low-pass filter

Answer

high pass filter

Answer

rabbit-ear antenna

Question 3

In TV studio lighting, the thumb rule for low-key lighting is

Accepted Answer

all above

Answer

to reduce the aperture of the camera lens

Answer

to cut-off background lights completely

Answer

to give strong key lights and to cut-off the background lights

Question 4

A TV signal from the antenna is processed by

Accepted Answer

RF amplifier

Answer

local oscillator

Answer

transmission line

Answer

RF tuner

Question 5

If for channel No. 7, IF picture frequency is 45.75 mHz, the local oscillator frequency would be ----MHz.

Accepted Answer

221

Answer

175.25

Answer

179.75

Answer

181.25

Question 6

The primary function of a picture preference diode is to

Accepted Answer

change the shape of IF response curve

Answer

demodulate video signal

Answer

change resonance frequency of the antenna

Answer

change the shape of RF resonance curve

Question 7

In a TV receiver, IF channel bandwidth is approxiniately

Accepted Answer

3.5 MHz

Answer

50 kHz

Answer

45.75 MHz

Answer

4.5 MHz

Question 8

In choosing the lens of TV camera for achieving maximum perception of depth, a ? lens is best choice

Accepted Answer

zoom

Answer

short focal length

Answer

long focal length

Answer

Bi-focal length

Question 9

The function of a video amplifier is to step-up the output from the

Accepted Answer

IF amplifier

Answer

antenna

Answer

front end

Answer

demodulator