User Account

All Pages

Sampled digitally at sampling frequencies

Assignment Help Mechanical Engineering
Reference no: EM131009318

1. (a) A sine wave at frequency f= 90 Hz is sampled digitally at sampling frequencies fs=200,160 and 50 Hz respectively. For each case, discuss whether there is aliasing. Also for each case, calculate the aliasing (perceived) frequency.(b) Using EXCEL (or Matlab or any other computer program) generate a sine wave at 90 Hz, DC offset =1.0 V, and amplitude = 2.2 V. Plot a smooth curve representing the real signal. Plot the time axis from 0 to 0.2 seconds, and the vertical axis from -2 to 4 V. On the same plot, plot the digitally acquired data (at 50 Hz sampling frequency) as symbols connected by straight line segments. Calculate the observed frequency from your plot and compare with the frequency calculated in part (a) and discuss briefly.

2. The signal-to-noise ratio SNR is defined as SNR=20log(Vsignal/Vnoise).(a) Calculate the signal-to-noise ratio SNR of an 80 Hz electrical signal with amplitude 2.00 V containing noise at 3600 Hz with amplitude 0.150 V.(b) In order to reduce the noise level the signal is filtered using a 2nd-order low-pass filter with a cutoff frequency of 100 Hz. Calculate the signal-to-noise ratio (SNR) with the filter and compare with part "a".Does the filter significantly improve the SNR?

Reference no: EM131009318

Questions Cloud

Overview of societal marketing practices of chosen company : An overview of the societal marketing practices of the chosen company and The type of promotions undertaken to support the programs
Create a new product that would appeal to your market : Choose the target market for your product, and describe your target market in detail. Create a new product that would appeal to your market. Develop at least one question for each characteristic of the target market
Consider the gas carburizing of a gea : Consider the gas carburizing of a gear of 1020 steel at 927oC. Calculate the carbon content at 0.5mm beneath the surface of the gear at 5hr carburizing time
The strategy for controlling the rotor speed of a variable : The strategy for controlling the rotor speed of a variable speed wind turbine is to aim at the relation shown in the figure below between the rotational speed of the generator and the generator power.
Sampled digitally at sampling frequencies : A sine wave at frequency f= 90 Hz is sampled digitally at sampling frequencies fs=200,160 and 50 Hz respectively. For each case, discuss whether there is aliasing. Also for each case, calculate the aliasing (perceived) frequency.(b) Using EXCEL (or M..
Data measure imports of goods and services : These data measure imports of goods and services into the United States, quarterly from 1981 through 2011 1n  = 124 quarters2. The data are given in billions of dollars, expressed at an annual rate. The data table includes a column named Quarter, wit..
Data measure imports of goods and services : These data measure imports of goods and services into the United States, quarterly from 1981 through 2011 1n  = 124 quarters2. The data are given in billions of dollars, expressed at an annual rate. The data table includes a column named Quarter, wit..
Calculate the carbon content at 0.5mm beneath : Consider the gas carburizing of a gear of 1020 steel at 927oC. Calculate the carbon content at 0.5mm beneath the surface of the gear at 5hr carburizing time. Assume the carbon content at the surface is 0.90% and that the steel has a nominal carbon co..
Problem regarding the compensation : These data measure hourly compensation in the US manufacturing sector from 1987 through 2011. The data are assembled by the Bureau of Labor Statistics from surveys. The value of the index was set to 100 in 2005, so the data indicate relative amoun..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Package design

Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.

  Mechanical engineering questions

Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.

  Automatic control

DOF system and Find the differential equation describing the system

  Write a paper on boyle''s law

Write a paper on Boyle's law and describe Compression and Combustion stroke . Also explain Charles's law and illustrate SI engine and CI engine.

  Verify the law for parallelogram of forces

To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.

  Discharge pressure of the compressor

What is the discharge revised discharge pressure of the compressor.

  The Case for Global Accounting Standards

The role of IFRS in both developing and developed capital markets.

  Wind turbine

Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.

  Advanced design methodologies

8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..

  Design of absorption column and the cooler

Design of absorption column and the cooler. Process design of other units should be completed along with pipe sizes.

  Determine the maximum total bending moment

Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.

  Force of the water on the gate

Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd