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The addition of a 20-kvar capacitor bank improved the power factor of a certain load to 0.90 lagging. Determine the complex power before the addition of the capacitors, if the final apparent power is 185 kVA.
Explain why it is unlikely one would encounter a circuit exhibiting a critically damped response in practice. What impact would time and temperature have on a supposedly "critically damped" circuit
Electrons are in random motion in a fixed region in space .During 1 sec interval, the probability of finding an electron in a subregion of volume 10^(-15) m3 is 0.23. What volume charge density , appropriate for such time durations, should be assig..
how big will be inductance of coil if it is connected in series with resistor 30 omega on AC circuit with input voltage with RMS value U1=(220+2*1.7) V and frequency 50 Hz if power factor of the circuit is 0.6
You have a laundry room where the following loads are connected to a 208V circuit: 2500W electric base board heater, 600W wash machine, 3600W dryer, and a 1000W iron. All loads are connected in parallel.
What is the reliability, the equivalent MTBF value, and the equivalent failure rate for a system that has a primary microprocessor circuit board and a secondary microprocessor circuit board that is hooked up in standby redundancy
Two amplifiers(CS) connected in cascade. The input voltage to the first stage has a source voltage Vsig and Rsig= 100KOhm. Rv=10KOhm AND IS CONNECTED TO THE DRAIN OF THE SECOND STAGE. BOTH TRANSISTORS HAVE Id=.25mA and Vov=.25V
If the motor is driving a load whose torque requirement remains constant at 3Nm, independent of speed. Calculate the armature voltage Va to be applied in steady state, if the load to be driven at 1500RPM.
A flat sheet of paper of area 0.150 m2 is oriented so that the normal to the sheet is at an angle of 65° to a uniform electric field of magnitude 29 N/C. (a) Find the magnitude of the electric flux through the sheet.
Determine whether the following discrete-time systems are causal or noncausal, have memory or are memoryless, are linear or nonlinear, are time invariant or time varying. In the following parts, x[n] is an arbitrary input and y[n] is the response
Sketch the appropriate equivalent circuit and phaser diagram and, assuming step-down operation, determine (a) the magnetizing current and the core-loss component of exciting current; (b) the exciting current; (c) the no-load power factor; (d) the ..
Add the following numbers in binary using 2's complement to represent negative numbers. Use a word lenght of 6 bits (including sign) and indicate if an overflow occurs. (a) 21+11 (b) (-14)+(-32)
A four pole DC machine has a wave winding of 300 turns. The flux per pole is .025 webers. The DC machine rotates at 1000 RPM. Determine the generated voltage and the kW rating if the current through the turn is 25 amps.
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