Communication System | Matching Type Questions

Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.

List I List II
Types of analog communication System bandwidth
A. single sideband AM 1. BW proportional to modulation index
B. Wideband FM 2. BW = 2 x maximum signal frequency, fmax
C. Vestigial sideband AM 3. fmax < BW < 2 fmax
D. Double sideband AM 4. BW = fmax

Codes:       A     B     C     D

(a)             1       4     3     2

(b)             4       1     3     2

(c)             3       4     2     1

(d)             2      1     3      4

Answer
(b)

Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.

List I List II
Coding technique in digital communication systems Purpose
A. Huffman code 1. Elimination of redundancy
B. Error correcting code 2. Reduces bit rate
C. NRZ-coding 3. Adapts the transmitted signal to the line
D. Delta modulation 4. Channel coding

Codes:       A     B     C     D

(a)             1       2     3     4

(b)             3       4     1     2

(c)             1       4     3     2

(d)             3      2     1      4

Answer
(c)

Q. Match the items given in List I and those in List II. Select your answers using the codes given in the question.

List I List II
Modulation Application
A. Wideband FM 1. mobile communication
B. Narrowband FM 2. Superimposition of binary waveform on carrier
C. AM 3. TV video
D. VSB-AM 4. TV audio
  5. Medium wave broadcast

Codes:       A     B     C     D

(a)             4       3     5     1

(b)             5       1     2     3

(c)             4       1     5     3

(d)             5      3     2      1

Answer
(c)
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