Question

For the transformer, sketch the input and output waveforms given a sine wave input voltage. Note: the vertical axis represents voltage and the horizontal axis represents time. Compare and contrast the amplitude, shape, phase, and period. Repeat for a square wave.

Answer #1

1-Draw the schematics of a full-wave rectifier circuit
without smoothing capacitor. Sketch the input and
output voltage waveforms?
2- Draw the schematics of a full-wave rectifier circuit
with smoothing capacitor. Sketch the input and
output voltage waveforms?

For three-phase, Full-wave, Semi-controlled rectifier,
sketch the waveforms for following at firing angle Alpha = 90 and
over-lap angle Gama = 10
Gama of the diode = 10
Gama of the Thyristor=5
a- The positive and negative voltage relative to neutral.
b- The input current for phase (a)
Gama diode 10
Gama Thyristor 5
Sketeh a and b

Question 27
A. A transformer has an input voltage of 100 V and an output
voltage of 10,000 volts. If the primary coil has 100 turns and the
input current is 2 A, what is the output current, and how many
turns does the secondary coil have?
B. What is the flux through a loop of wire with 20 turns having
a circular shape with a radius of 5.0 cm when it is placed with its
face perpendicular to a...

For a single phase square wave inverter of 300V input supply
voltage 60Hz, calculate the 6th, harmonic that will be generated at
the output of the inverter

For a single phase square wave inverter of 300V input supply
voltage 60Hz, calculate the 3rdd, harmonic that will be
generated at the output of the inverter

A voltage signal is created by adding the output from a white
noise generator and from a sinewave generator. The white noise is
band limited in the range 30 to 80 Hz and has a root mean square
value (rms) of 1.5 V. The sine wave has a frequency of 50 Hz and an
amplitude of 1.0 V.
The signal is digitized at 200 samples per second and a spectral
density is obtained by the Fast Fourier Transfer (FFT) algorithm,...

Sketch a portion of an EMR wave showing the electric field in
the vertical direction along a spatial horizontal axis. Label the
axes, try to show at least two wavelengths, and point out what is
meant by the ‘wavelength’. EMR can have a very wide range of
wavelengths. As you may already know, different types of
electromagnetic waves have been defined based on their wavelength
ranges.
Now, try to imagine what the wave might look like if you were
able...

Two waves traveling in opposite directions on a stretched rope
interfere to give the standing wave described by the following wave
function:
y(x,t) = 4 sin(2πx) cos(120πt),
where, y is in centimetres, x is in meters, and t is in seconds.
The rope is two meters long, L = 2 m, and is fixed at both
ends.
In terms of the oscillation period, T, at which of the following
times would all elements on the string have a zero vertical...

1. A firm production function is given by q(l,k) =
l0.5·k0.5, where q is number of units of
output produced, l the number of units of labor input used and k
the number of units of capital input used. This firm profit
function is π = p·q(l,k) – w·l – v·k, where p is the price of
output, w the wage rate of labor and v the rental rate of capital.
In the short-run, k = 100. This firm hires...

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