Description
Principles of Electronic Communication Systems 4th Edition by Frenzel – Test Bank
1.
A sine wave carrier can be modulated by varying its amplitude, frequency, or phase shift.
TRUE
2.
Blooms: 2. Understand
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Easy
Section: 05.01 Basic Principles of Frequency Modulation
Subtopic: Basic Principles of Frequency Modulation
Topic: Fundamentals of Frequency Modulation
Impressing an information signal on a carrier by changing its frequency produces AM.
FALSE
3.
Blooms: 2. Understand
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Medium
Section: 05.01 Basic Principles of Frequency Modulation
Subtopic: Basic Principles of Frequency Modulation
Topic: Fundamentals of Frequency Modulation
In FM, the carrier amplitude remains constant and the carrier frequency is changed by the modulating signal.
TRUE
4.
Blooms: 2. Understand
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Hard
Section: 05.01 Basic Principles of Frequency Modulation
Subtopic: Basic Principles of Frequency Modulation
Topic: Fundamentals of Frequency Modulation
The frequency of the modulating signal determines the frequency deviation rate.
TRUE
Blooms: 1. Remember
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Hard
Section: 05.01 Basic Principles of Frequency Modulation
Subtopic: Basic Principles of Frequency Modulation
Topic: Fundamentals of Frequency Modulation
5.
Frequency-shift keying is widely used in the transmission of binary data in digital cell phones.
TRUE
6.
Blooms: 2. Understand
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Medium
Section: 05.02 Principles of Phase Modulation
Subtopic: Principles of Phase Modulation
Topic: Fundamentals of Frequency Modulation
When the amount of phase shift of a constant-frequency carrier is varied in accordance with a modulating signal, the resulting output is a phase modulation signal.
TRUE
7.
Blooms: 1. Remember
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Hard
Section: 05.02 Principles of Phase Modulation
Subtopic: Principles of Phase Modulation
Topic: Fundamentals of Frequency Modulation
The maximum frequency deviation produced by a phase modulator occurs when the modulating signal is changing at its slowest rate.
FALSE
8.
Blooms: 2. Understand
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Easy
Section: 05.01 Basic Principles of Frequency Modulation
Subtopic: Basic Principles of Frequency Modulation
Topic: Fundamentals of Frequency Modulation
In FM, the frequency deviation is indirectly proportional to the amplitude of the modulating signal.
FALSE
Blooms: 1. Remember
Chapter: 05 Fundamentals of Frequency Modulation
Difficulty: Medium
Section: 05.02 Principles of Phase Modulation
Subtopic: Principles of Phase Modulation
Topic: Fundamentals of Frequency Modulation
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