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Considering an ideal transformer with impedance on the secondary, neglecting the winding resistances, leakage inductances and the core loss. N1/N2=3 For a voltage of 120V (rms) at a frequency of 60 Hz applied to winding 1, the magnetizing current is 1.0A (rms). If a load of 1.1O at a power factor 0.866 lagging is connected to the secondary winding, calculate the core flux density.
Design 3 stage amplifier with the following requirement input signal = 5 mV with R=10k ohms over all gain > 1000 power supply: Vcc = 5V, Vee = -5V Rin > 1 Mega Ohms Rout = 100 ohms 1st Stage BJT must use inverting
Three single-phase, two-winding transformers, each reated 450 MVA, 20 kV/288.7 kV with leakage reactance Xeq=0.12 per unit, are connected to form a three-phase bank. The high voltage windings are connected in Y with solidly grounded neutral.
A 4 pole 50 kW dc machine has a value of Ea = 110 V at 1100 rpm. What is the induced voltage is the speed is increased 20%. Note: omega(w) = (2f*n)/60 where omega is in rad/sec, and n is in rpm
A uniform electric field of magnitude 690 N/C exists between two parallel plates that are 3.88 cm apart. A proton is released from rest at the positive plate at the same instant an electron is released from rest at the negative plate.
Assume all your standard value resistors are accurate to 0.1%. What would be the worst-case variation in overall resistance for your design (both high and low). How might you construct a resistive network using the smallest number of standard resis..
A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%
give three methods that are used to express logic relationship between inputs and outputs of a logic gate, for example a three-inputs NOR gate.
pecify the value for R. What is the diode current with the load connected What is the increase resulting in the output votage when the load is disconnected What change results if the load resistance is reduced to 100ohms? To 75ohms To 50ohms
A process has dynamics G(s)=1/(4s^s+s+1). Apply a unity negative feedvack controller of the form G.c(s)=1/(s+b). (a) Report the transfer function T(s) of the closed-loop system. (b) Report T(s) to 2nd order and report the reduced transfer function T..
Assume you have a receiver with an overall noise figure of 23 dB and a bandwidth of 1 MHz. Assuming the minimum acceptable SNR at the output of the receiver is 6 dB, estimate the minimum detectable signal level in dBm at the receiver input.
An InP TED is 0.5 pm long with a cross sectional area of 10" cm2 and is operated in the transit-time mode.(a) Find the minimum electron density no required for transit-time mode.
A 1 kHz sine wave signal with a power level -10 dBm is applied to the input of the amplifier. What is the power at the amplifier output?
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