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A single-phase transformer has three windings. The primary winding N1 carries a current of I1 =10A. One of the secondary windings has 3000 turns and carries 2A, and the other secondary winding has 6000 turns and carries 1A. All currents are in phase. Compute the number of turns in the primary winding.
What percentage is this voltage change () of the total possible voltage swing of Vout (voltage range from highest to lowest voltage). Show on the attached figure how you arrived at and the total voltage swing for Vout.
A message signal, x(t) has a bandwidth of 15 kHz and an average power of 0.5 W. This signal is to be uniformly quantized with an input range of range of +-5 V. What is the bit rate of the corresponding PCM signal if the SQNR is to be greater than ..
If it has a resistance of 30 Ω and an inductance of 0.5 H, calculate the apparent power and the power factor.
An intercom system has a 13 kHz annoying whistle with amplitude of 20% of a typical voice signal. Assume that a typical voice signal has a frequency of 3 kHz and the intercom's output for a typical voice level has amplitude of 10V.
A60-Hz induction motor is needed to drive a load at approximately 850 rpm. How many poles should the motor have? What is the slip of this motor for a speed of 850 rpm?
Show the design of a 2-1 Mux: (a) using a NAND/NAND implementation, (b) using a NOR/NOR implementation. Which would you prefer to build and why Assume that you have all variables and their complements available.
Consider a DC series motordesigned to operate with VS = 200 V. Suppose the rotorresistance is 0.40 ohms. and the field coil resistance is0.10 ohms . An RPM measurement reveals that when the line currentis 35 A when the motor is spinning at n = 500..
The output voltage of a voltage amplifier has been found to decrease by 20% when a load resistance of 1 k ohm is connected. What is the value of the amplifier output resistance
a) Find the intersection of the two lines. b) Find two vectors that also describe the two lines originating from the intersection. c) Find the angle between the two lines.
A load has a 20 ohm resistor and a 4 Henry inductor connected in series. It is connected to a power source with v(t) = 100 cos(50t), connected in series to the load. What is the impedance of the load? Use phasor transform methods to obtain your an..
A CG amplifier when fed with a signal source having Rsig = 200 ohms is found to have an overall voltage gain of 10V/V. When a 200 ohm resistance is added in series with the signal generator the overall voltage gain decreased to 8V/V.
A 3-phase,4pole star connected turbo alternater has a cylindrical rotar. The reactance and resistance perphase of winding is 2.5 ohms and 0.15 ohms.The alternater hasterminal potential difference of 6600V when delivering a current of250Amps.
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