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A step up chopper is used to deliverload stage of 500V from a 220V DC source.
if the blocking period of the thyristoris 80micro sec the required pulse width is?
Load flow studies are performed to investigate the which features of a power system network?
The coil area is 2.7 mm*mm, the number of turns is 187; it also has an iron core with permeability mu= 600. How long must the coil be to have an inductance of 8.3 mH
A continuous time system, described by y(t) = 5 Cos (2*pi*20*t + pi/2), is sampled at a rate 320 Hz. (a) Write the mathematical expression that describes the discrete time (sampled) signal. (b) Calculate the value of the discrete signal for n = ..
The output is taken across the capacitor/coil. The coil winding has a resistance of 20Ω . What is the center frequency of the filter?
Four frequencies are applied at the input of a non-linear amplifier. Write down all of the frequency components at the output of the non-linear device. Write down only the first three harmonics.
Copper has one conduction electron per atom, that is, each atom contributes one electron that is free to move through the solid.
Determine the impulse resonpse of the Fourier Transform for a moving average filter which produces the average value of the present and previous nine samples of a signal, i.e. averaged over ten samples
The joint probability distribution of X and Y is concentrated in a small region of the probability space.
A Si p-n-p transistor has impurity concentrations of 5´1018, 2´1017, and 1016 cm-3 in the emitter, base, and collector, respectively. The base width is 1.0mm, and the device cross-sectional area is 0.2 mm2.
Describe the relationship between peak voltage, peak-to-peak voltage and rms voltage. Include in the discussion which values can be demonstrated with the laboratory test equipment.
What is the quantization signal to noise ratio SNRQ at the receiver output? e. If the SNRQ were to be raised to 96 dB, how many bits would the ADC and DAC need? What would be the bit rate on the serial link?
The nameplate on a 50-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV: 78-kV. An open-circuit test is conducted from the low-voltage side, and the corresponding instrument readings are 8.0kV, 62.1A, and 206kW.
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