Frequency Modulation (Simulation):
Briefly discuss some techniques that you could use to modify the modulation index, and also, to increase the signal bandwidth for this FM signal.
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Part 1: Solve the operation 75.38-18.62 in binary using two's complement. Use 6 bits for the fractionary part.
Part 2:Convert the result to a decimal, and explain how much is the absolute error obtained in the operation.
(Provide Step by Step process of problem solving in each part.)
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Describe the functions provided by the microcontroller PIC24FJ256GB106 whihc is used in printers such as HP Office Jet 6000?
only functionality, no features needed
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Design an experiment setup for determination the time constant of a thermistor?
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energy and power of signals.
(a) Plot the signal x(t) = e−tu(t) and determine its energy. What is the power of x(t)?
(b) How does the energy of z(t) = e−∣t∣, −∞ < t < ∞, compare to the energy of z1(t) = e−tu(t)? Carefully plot the two signals.
(c) Consider the
signal
y(t)
=
sign[xi(t)]
=
1
xi(t)
≥
0
−1 xi(t) < 0
for −∞ < t < ∞,i = 1,2. Find the energy and the power of y(t) when (a)x1(t) = cos(2πt) (b)x2(t) = sin(2πt)
Plot y(t) in each case.
(d) Given v(t) = cos(t) + cos(2t).
i.
Compute the
power of v(t).
ii.
Determine the
power of each of the components of v(t),
add
them and compare the result to the power of v(t).
(e) Find the power of s(t) = cos(2πt) and of f(t) = s(t)u(t). How do
they compare?
Answers: (a) Ex = 0.5; (b) Ez = 2Ez1; (c) Py = 1; (d) Pv = 1.
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Sketch the energy band diagrams for metals, insulators and semiconductors and explain the how they differ based on the bandgap, density of states and conductivity.
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Two common load components for electrical energy is Heat (Heater) and Light (Lamp).
Please research the material used to construct these load elements and provide a summary.
1- Performance Property of Material
2- Different materials used
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1. Explain briefly the operation of a bi-polar transistor as a switch.
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a. Calculate the electron density (your unit should be correct)
for a CNT at T = 0K. Assume that the Fermi level is at Ef = 1eV and
the bottom of the conduction band is at Ec = 0.8eV. Use 1D density
of states (DOS). Electron effective mass = 0.5m0
b. Will your result change if the Fermi level is at Ef = 0.8eV and
the bottom of the conduction band is at Ec = 0.6eV.
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5.4 Explain the following terms:
(a) calibration chain
(b) traceability
(c) standards laboratory
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Briefly describe (10 to 15 sentences) how an analog oscilloscope displays a periodic waveform. Assume the trigger is set to the same channel as the periodic waveform being displayed. Be sure to clearly describe the relationship between the trigger, oscillating signal, and CRT sweep rate. The reader should have a good idea why a periodic waveform appears stationary on the oscilloscope. You can sketch diagrams if that helps your explanation.
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1. Give an example in which regression toward the mean might occur?
2. Write out an example of a question and responses, using EGWA scale?
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lab report about following
Note ** Should has examples **
Note ** Work through the Word program
**
Lab 1 - capacitors
Lab 2- indactor
Lab 3 - resistor
Lab 4- Ohm's law
Lab 5 - KVL
Lab 6 - KCL
Lab 7 - series and parallel circuit
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A television signal is broadcasting over a suitable
band. The initial frequency of the
band is 270(MHz)
Sketch a neat spectrum of Television transmission as
per NTSC and PAL system.
Clearly mention the picture, sound and color position on it.
In: Electrical Engineering
In: Electrical Engineering