CUET-PG SERIES Nanoelectronics
Communication Systems
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
3
2025 Chapter Questions 3 MCQs
01
PYQ 2025
medium
nanoelectronics ID: cuet-pg-
The transmission efficiency of an ordinary AM signal with a modulation percentage of 80% is:
1
24.24%
2
48.49%
3
20.22%
4
33.33%
02
PYQ 2025
medium
nanoelectronics ID: cuet-pg-
In amplitude modulation:
(A) The envelope detector operates properly, only if
(B) Vestigial sideband modulation is used in television broadcasting.
(C) Selective fading produces more distortion in SSB-SC systems than in DSB-SC.
(D) Efficiency of a suppressed carrier system is 100%, whereas in AM the maximum efficiency is only 33.3%.
Choose the correct answer from the options given below:
(A) The envelope detector operates properly, only if
(B) Vestigial sideband modulation is used in television broadcasting.
(C) Selective fading produces more distortion in SSB-SC systems than in DSB-SC.
(D) Efficiency of a suppressed carrier system is 100%, whereas in AM the maximum efficiency is only 33.3%.
Choose the correct answer from the options given below:
1
(A), (B) and (D) only
2
(B) and (C) only
3
(A), (C) and (D) only
4
(B), (C) and (D) only
03
PYQ 2025
medium
nanoelectronics ID: cuet-pg-
Match List-I with List-II:
| List-I (Modulation Schemes) | List-II (Wave Expressions) |
|---|---|
| (A) Amplitude Modulation | (I) |
| (B) Phase Modulation | (II) |
| (C) Frequency Modulation | (III) |
| (D) DSB-SC Modulation | (IV) |
Choose the correct answer:
1
(A)–(I), (B)–(II), (C)–(III), (D)–(IV)
2
(A)–(IV), (B)–(III), (C)–(II), (D)–(I)
3
(A)–(III), (B)–(IV), (C)–(I), (D)–(II)
4
(A)–(I), (B)–(II), (C)–(IV), (D)–(III)