1000+ Communication Systems MCQ Questions and Answers Pdf - 1

Question: 1

An electronic system for transmitting graphical information by wire or radio is

(A) e-mail

(B) fax

(C) internet

(D) none of the above

Question: 2

The process of extracting the audio signal from high frequency carrier or intermediate frequency is referred to as

(A) audio selection

(B) demodulation

(C) modulation

(D) none of the above

Question: 3

The horizontal scanning frequency is defined as the number of

(A) lines scanned per second

(B) frames scanned per second

(C) lines scanned per minute

(D) frames scanned per minute

Question: 4

When the saw tooth potential is applied to the horizontal plates, it is called

(A) blanking pulse

(B) timer pulse

(C) line synchronising pulse

(D) frame synchronising pulse

Question: 5

The output of the TV camera and synchronising pulses are modulated on

(A) ultra high frequency carrier wave

(B) high frequency carrier wave

(C) super high frequency carrier wave

(D) voice frequency carrier wave