Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

problem 1: Sketch the Fourier transform of a rectangular pulse of amplitude 10 V and width 0.1 second that is centered on the zero time axis. Indicate the amplitude at dc and for the first spectral peak. Also indicate the frequency of the first spectral peak and points of zero amplitude. 

problem 2: The signal exp(-3t) u(t) is delayed 0.1 seconds and subtracted from itself. What is the Fourier Transform of the output signal? Draw a block diagram of the system. What is the Transfer Function of the system, H(f)?  

problem 3: What is the autocorrelation function of a rectangular pulse with an amplitude of 5 volts that exists between t = 0 and t = 10 seconds? Sketch your answer (a graphical solution is OK).

problem 4: A signal, x(t) = 2 sin (10π 106 t), is applied to the input of an RC lowpass filter with a cutoff frequency of 1 MHz. What is the output signal? How many dB is the output signal relative to the input signal? 

problem 5: Find out the instantaneous frequency of a signal v(t) = 5 cos (10πt + cos 5πt) at t = 10 seconds.

problem 6: A 100 MHz carrier is frequency modulated by a 1 kHz sinusoidal signal and has a peak frequency deviation of 2 kHz. Draw the spectrum of this signal. Show the frequency and amplitude (relative to the unmodulated carrier level) of at least the first 2 sidebands.

problem 7: Sketch the constellation patterns (magnitude and phase) of a BPSK, a QPSK and an 8PSK digitally modulated signal. If all three types of signals occupy the same bandwidth, what is the ratio between their relative maximum information transmission rates?

1774_constellation patterns.jpg

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M96042

Have any Question? 


Related Questions in Electrical & Electronics

A synchronous generator connected directly to an infinite

A synchronous generator connected directly to an infinite bus is generating at its maximum real power. The line-to-line voltage of the infinite bus is 480V and the synchronous reactance of the generator is 5Ω. Compute th ...

If a sequence of rectangular pulses are connected to the

If a sequence of rectangular pulses are connected to the input of a long cable a distorted signal (a kind of „melted rectangle") appears at the distant end of the cable. a) What are the causes of these distortions? b) Ar ...

Determine the loop gain t for the circuit in figure

Determine the loop gain T for the circuit in Figure P12.49. The transistor parameters are: hFE = 100, VB E (on) = 0.7 V, and VA = ∞.

Questionthe switch in the circuit a has been open for a

Question: The switch in the circuit (a) has been open for a long time. It is closed at time t-0. Find V out (t) for t>0. Question: The switch in the circuit(b) shown below has been in position A for a long time. It is mo ...

A 100 mva synchronous generator is connected to a 25kv

A 100 MVA synchronous generator is connected to a 25kV infinite bus through two parallel transmission lines. The synchronous reactance of the generator is 2.5Ω, and the inductive reactance of each transmission line is 2Ω ...

A textile engineer is interested in measuring heat

A textile engineer is interested in measuring heat resistance of four different types of treads used in making fire-resistant clothing for firefighters. A random sample of 20 threads from each type was taken and subjecte ...

Find v and i in the circuit of given figure with a

Find v and I in the circuit of given figure with a supernode.

During a weather storm an atmospheric discharge hits a

During a weather storm, an atmospheric discharge hits a lightning pole. The pole is grounded through a hemisphere. The maximum value of the lightning current through the pole is 10 kA. The soil of the area is moist. A ma ...

Generate a speech-like signal for your experiments by

Generate a speech-like signal for your experiments by low-pass filtering a noisy signal. Where is there a "noise generator" and a "lowpass filter" in the mouth and throat cavity?

The self-inductance of a stator winding of a salient

The self-inductance of a stator winding of a salient electric machine, shown in Fig. P3.4, is given by Answer the following questions [9]. (1) Derive the field energy of the machine. (2) Derive the coenergy of the machin ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate