1000+ Communication System Objective Questions and Answers Pdf - 2

Question: 6

Which one of the following types of noise gains importance at high frequency?

(A) transit time noise

(B) impulse noise

(C) random noise

(D) shot noise

Question: 7

Bandwidth of color television transmission is of the order of

(A) 1 MHz

(B) 6 MHz

(C) 10 MHz

(D) 100 kHz

Question: 8

The envelope detector is a/an

(A) coherent detector

(B) product demodulator

(C) synchronous detector

(D) asynchronous detector

Question: 9

One of the main functions of the RF amplifiers in a superheterodyne receiver is to

(A) improve the rejection of the image frequency

(B) increase the tuning range rejection

(C) permit better adjacent channel rejection

(D) provide improved tracking

Question: 10

The function of padders in radio receivers is to

(A) improve tracking

(B) reduce noise

(C) reduce image frequency rejection

(D) improve sensitivity