Skip to primary navigation
Skip to main content
Skip to primary sidebar

ALLSIGNALPROCESSING.COM

Learn signal processing online

Home
Courses
Courses
About
FAQ
My Account
Blog
News
Contact
Login
Logout
Get All Access

Sinusoidal Signals

February 2, 2019 by 3200 Creative

Sinusoidal Signals

Time limit: 0

Quiz Summary

0 of 4 Questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 4 Questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Categories

Not categorized 0%

1
2
3
4

Current
Review
Answered
Correct
Incorrect

Question 1 of 4

1. Question
Which of the following sets of parameters uniquely specify a sinusoid? Select all that apply.
- Amplitude and frequency
- Amplitude, phase, and period
- Frequency
- none of the other choices
- Frequency, phase, and amplitude
Correct

Incorrect
Question 2 of 4

2. Question
A discrete-time sinusoid is of the form $x[n] = \cos(\omega n + 0.25\pi)$ . Which of the following pairs of frequencies result in distinct sinusoids? Select all that apply.
- $\omega_1 = \frac{\pi}{5}$ and $\omega_2 = \frac{-9\pi}{5}$
- $\omega_1 = \frac{\pi}{5}$ and $\omega_2 = \frac{4\pi}{5}$
- $\omega_1 = \frac{\pi}{3}$ and $\omega_2 = \frac{13\pi}{3}$
- $\omega_1 = \frac{13\pi}{4}$ and $\omega_2 = \frac{57\pi}{4}$
- $\omega_1 = \frac{13\pi}{4}$ and $\omega_2 = \frac{59\pi}{4}$
- None of the other choices
Correct

Incorrect
Question 3 of 4

3. Question
A continuous-time sinusoid has frequency $\Omega = 70\pi$ rads/sec and is sampled at a sampling interval of $T = 0.01$ sec. What is the frequency of the discrete-time sinusoid?
- $\omega = 70\pi$ rads
- $\omega = 0.7\pi$ rads
- $\omega = 7000\pi$ rads
- $\omega = 0.7$ rads
- None of the other choices
Correct

Incorrect
Question 4 of 4

4. Question
A discrete-time sinusoid has frequency $\omega = \frac{\pi}{4}$ and was obtained by sampling a continuous-time sinusoid at intervals of $T = 2$ secs. Which of the following could be the frequency of the continuous-time sinusoid? Select all that apply.
- $\Omega = \frac{\pi}{2}$ rads
- $\Omega = \frac{\pi}{8}$ rads
- $f = \frac{1}{4}$ Hz
- $f = \frac{1}{16}$ Hz
- $f = \frac{1}{2}$ Hz
- $\omega = \frac{\pi}{4}$ rads
- Impossible to tell
Correct

Incorrect

Filed Under: Uncategorized

Primary Sidebar

Course Lessons

Signals Everywhere
Ever-Present Noise
Models, Math, and Real-World Signals
Four Signal-Processing Themes
Building Signals with Blocks: Basis Expansions
Jupyter Notebook: Explore FIR Filtering
Jupyter Notebook: Explore Image Filtering
Signals: The Basics
Sinusoidal Signals
Sinusoidal Signals Examples
Complex Sinusoids
Exponential, Step, and Impulse Signals
Introduction to Linear, Time-Invariant Systems
Introduction to Difference Equation System Descriptions
Impulse Response Descriptions for LTI Systems
Frequency Response Descriptions for LTI Systems
Introduction to the System Function and System Poles and Zeros
The Four Fourier Representations
Summary Problems for Foundations

Courses

Foundations
Time Domain LTI Systems
Fourier Series and Transforms
Sampling and Reconstruction
The DFT and Applications
The Z-Transform
Intro to Filter Design
IIR Filter Design
FIR Filter Design
Random Signal Characterization
Basis Representations of Signals
Estimation of Power Spectra and Coherence
Introduction to Signal Estimation and Detection Theory
MMSE Filtering and Least-Squares Problems

Copyright © 2023 ALLSIGNALPROCESSING.COM | Site Design by 3200 Creative

Terms of Service
Privacy Policy
Contact