MCQ Set – Communication Systems

MCQ Set – Communication Systems

University

10 Qs

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MCQ Set – Communication Systems

MCQ Set – Communication Systems

Assessment

Quiz

Other

University

Practice Problem

Hard

Created by

Ngu Hlaing

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To accurately sample an analog signal with a maximum frequency of 5 kHz, what is the minimum sampling rate required?

2.5 kHz

5 kHz

10 kHz

20 kHz

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a disadvantage of increasing the sampling rate significantly beyond the Nyquist rate?

Improved signal quality

Increased data storage and processing requirements

Simplified anti-aliasing filter design

Better time resolution of signal

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is modulation essential when transmitting low-frequency signals such as voice?

To eliminate quantization noise

To allow efficient transmission and reduce antenna size

To remove aliasing

To reduce jitter

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Using a higher carrier frequency in modulation helps reduce antenna size because:

The signal strength increases with frequency

Higher frequencies penetrate obstacles better

Wavelength decreases, allowing smaller antennas

It avoids intersymbol interference

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an advantage of Differential Pulse Code Modulation (DPCM) over standard PCM?

Lower compression efficiency

Reduced bit rate due to predictive encoding

Higher data redundancy

Higher error propagation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Intersymbol Interference (ISI) primarily occurs due to:

Incorrect modulation scheme

Overlapping of symbols caused by multipath propagation

Poor analog-to-digital conversion

Low quantization resolution

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a common cause of ISI in indoor wireless communication?

High transmission power

Multipath reflections from walls and objects

Low sampling rate

Antenna misalignment

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