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1. A 220 V, 50 Hz, 2-pulse, full wave, single-phase to three-phase cycloconverter is used to control an induction motor as reversible drive in the frequency range from 1 Hz to 6 Hz with constant torque control. If at particular operating condition load power factor is 0.88 and input displacement factor 0.70 then calculate (a) range of firing angle control, (b) highest value of input power factor and corresponding firing angle, (c) lowest value of input power factor and corresponding firing angle, (d) highest values of distortion factor and the its instant, (e) lowest values of distortion factor and the its instant.
2. 1 kW heating element of a 230 V, 50 Hz electric stove is to be controlled by a triac circuit. The gate circuit of the triac uses a 0.2 mF capacitor and a diac with a break over voltage of 50 V. Calculate the adjustable resistance value to provide control down to an rms voltage of 40 V.
The charge carried by an electron is ?1.60×10?19 C. Suppose that an electron moves through a voltage of 120V from the negative polarity to the positive polarity. How much energy is transferred Does the electron gain or lose energy
A pn junction with Nd=4x10^16 cm^-3 and Na=3 x 10^15 cm^3 experiences a reverse bias voltage of 1.6V (a) Determine the width of the depletion region and the junction capacitance per unit area
If power Ps=10W, power gain factor G1=150, and power gain G2=14 dB, find the maximum value of LdB (path loss in dB) such that the power delivered to the resistor is -85 dBm.
Important information about Noise, Explain the role of the central limit theorem in the behavior of Additive White Gaussian Noise (AWGN).
Each pole of a 100kW, 250v flet-compound generator has a shunt field of 2000 turns and a series field of 7 turns. If the total shunt field resistance is 100 ohms
What is the time response
In animation programs, special effects are achieved by changing the properties of objects. What instruction is used to change the opacity and color properties of objects in the Zeus example world?
Calculate the maximum power that can be sent through an a=2cm , b=1cm air-filled waveguide at 12 GHz such that dielectric breakdown does not occur. Assume that the dielectric strength of air at atmospheric pressure is 3x10^6 [V/m]
Current to Voltage Op Amp Circuit, A 12-bit DAC (Digital to Analogue Converter) gives an output range of 0 to 1 mA for a digital input word of 0 to 4095
Using coppers resistivity of 10.30 CM-olm/ft at +25 °C, find how long a 1 inch square bar of copper would need be to have a resistance of 1 at +20 °C
A transmission line operating at 125 MHz has Zo = 40 Ω, α = 0.02 (Np/rn), and ß = 0.75 rad/m. Find the line parameters R', L', C', and G'.
In other words, your approach should be able to answer the question whether two BDDs are complements of each other, without using the complement operation.
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