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

  Calculate the temperatures when the water rate is reduced

water specific heat 4.2 kjkg c at the rate of 120 kgmin is heated from 20 to 70 c by an oil having a specific heat of

  A reversible power cycle receives enery qh from a hot

a reversible power cycle receives enery qh from a hot reservoir at th and rejects enerfy qc by heat transfer to a cold

  A piston-cylinder contains air at a pressure of 500 kpa the

a piston-cylinder contains air at a pressure of 500 kpa. the piston movement is resisted by a spring and atmospheric

  Determine final temp and heat transferred during the process

Piston-cylinder assembly contains 3 kg of steam at pressure of 100 bar and temp of 400 C. It undergoes a process by which it expands against a constant pressure of 20 bar, until the forces balance. The piston generates 748,740 J of work. Water is not..

  Volume and pressure and the work and heat transfer

Find the final volume and pressure and the work and heat transfer in the process.

  A balloon behaves so the pressure is p c2v13 c2 100 kpam

a balloon behaves so the pressure is p c2v13 c2 100 kpam. the balloon is blown up with air from a starting volume of

  Find the heat transfer rate during the process

Nitrogen enters a nozzle steadily at 1.2mpa and 600k with a velocity of 30m/s the inlet area of the nozzle is 0.005m^2 the nitrogen leaves the nozzle at 298k with a velocity if 400m/s. find the heat transfer rate during the process?

  How many nmi would airplane be off from the original target

An airplane flying at 185 kts with heading 320? Towards a target 300 nmi (nautical miles) away, experiences a steady wind of 23 kts from 020? If the time, without wind, to fly to the target was t.

  The temperature and pressure of the stream entering the

a stream containing 57 mol n-octane and the remainder ethylene is to be separated by flash distillation. the molar

  Based on the above conditions determine the error when the

a pressure transducer that behaves as a second order system is used to monitor pressure fluctuations in a petrochemical

  Temperature of refrigerant at end of the heating process

A rigid tank is heated for 9 minutes with a 800W electrical heater. During this time 70kJ of energy is lost due to heat transfer to the environment. Find the temperature of the refrigerant at the end of the heating process.

  Find the velocity of the satellite relative to that of the

suppose a satellite in geosynchronous orbit has just passed above the international space station with respect to the

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