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A single phase cyclo - converter with mid point configuration is use for obtaining an output frequency of one third times the inputfrequency. Turn ratio from primary to upper secondary is 1/1 and tolower secondary is 1/2 . The SCRs are so triggered as toobtain a symmetrical output voltage waveform . Sketch theoutput voltage and output current waveform for a resistive load forfiring angle α = 0 degree and α =30degree .Indicate the conduction of various thyristers.
Explain briefly why XL limits the amount of alternating current. Explain why XL increases with higher frequencies and more inductance. How might you use this fact in an application.
A series RC circuit is powered by a voltage supply of 120Vac and60Hz. The resistor has a resistance of 80W and capacitive reactanceis 60W. (1) Sketch a schematic for this circuit (2) Determine the capacitance of the capacitor
mutual shifted by 90 degree currents through each of both windings of the single phase A motor are (5.5+1.7) A but RMS voltage of the supply is 220 V.How big will be torque on shaft of the motor is efficiency factor is 0.7.
Show how you would build a 128 X 8 RAM memory using 32 X 4 RAM chips. Give a play-by-play account of how -36 (decimal) would be stored in location 80. (using block diagrams for the 32 X 4s, but showing all other details)
Silicon at T = 300 K is doped with arsenic atoms such that the concentration of electrons is n0 = 7 x 1015 cm -3. (a) Find Ec - EF. (b) Determine EF - Ev. (c) Calculate p0. (d) Which carrier is the minority carrier
THE Number of pumps in use at both a six-pump station and a four-pump station will be determined. Give the possible values for each of the following random variables. a. T = the total number of pumps in use
Create a state transition diagram for a simple state machine to detect a positive pulse. You choose either a Moore or Mealy machine. Write a Verilog HDL module for your state machine.
A CS amplifier using an NMOS with gm = 3.8 mA/V is found to have an overall voltage gain of -16 V/V. What value should a resistance RS inserted in the source lead have to reduce the overall voltage gain to -8 V/V
What is correct symbol rate (pulse rate) for this link? What is the bit rate with BPSK modulation? What is the bit rate with QPSK modulation?
1.) Find the resistance of an electric light bulb if there is a current of a 0.8 A and a voltge potential diference of 120V. 2.) A light bulb uses 1.2A when connected across a 120Vsource. What power is used by the bulb
For the equation F(a,b,c,d) = ab'c' + abc'd + abcd + a'bcd + a'bcd', determine all prime implicants and all essential prime implicants: (a) using a K-map, (b) using the tabular method.
a) Why is it that if the power system of interest is physically smaller than the wavelength, we can represent it as a lumped-parameter system b) Why a long wavenenth requires a gigantic antennas
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