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For the balanced three-phase system shown below, it is determined that 120 W is lost in each wire. If the load draws a total complex power (all three ZP loads) of 25 kVA at a lagging PF of 0.80 and the magnitude of the phase current IAB = 30 A rms. determine the following;
a) The magnitude of the phase voltage VAB.
b) The value of the wire resistance Rw.
c) The total complex power delivered by the source. What is the power factor at the source an state whether is leading or lagging.
A Bakelite coating is to be used with a 10-mm-diameter conducting rod, whose surface is maintained at 200°C by passage of an electrical current. The rod is in a fluid at 25°C, and the convection coefficient is 140 W/m2 · K. What is the critical ra..
Considering TE modes in a dielectric slab guide, specify the fundamental mode and discuss the associated cutoff condition.
A simple relay has an air gap of length 1.0mm and effective cross-sectional area of 1000mm2. The magnetising coilconsists of 1000 turns of wire carrying current of 200mA. Calculate the energy stored in the air gap.
Consider a series RL circuit with a voltage source. Take the output as the voltage across the resistor with L = 2 henrys and R = 4 ohms. (a) Find the zero input response as a function of time. The initial current is 2 A.
The efficiency and power factor for these conditions are 85 and 90% respectively. The combined windage, friction, and stray power losses are 1011W, the rotor conduction losses are 969W, and the stator conductor losses are 1559W.
Due to components not shown in the figure, the circuit of Figure has iL(0) = Ii. Write an expression for iL(t) for t ≥ 0. Find an expression for the power delivered to the resistance as a function of time.
Use Matlab to find out what function in time x(t) resulted in the Fourier Series Coefficients Xn = j/(2*p*n) for n?0 and X0=0. You can accomplish this by synthesizing the signal from sufficient frequency components.
An enhancement-type NMOS transistor with Vt=2 V has its source grounded and a 3-V DC source connected to the gate. Determine the operating state if a. vd = 0.5 V b. vd = 1 V c. vd = 5 V
Errors on a page. Suppose that the number of errors per page of a book has a Poisson distribution with parameter λ = 0.12. Also suppose that the expected number of pages in a randomly selected new book is 400. Find the mean number of errors in suc..
A temperature sensor covers a range of 0 to 70 degrees C with an output sensitivity of 2 mV/degree C. The sensor is input to an ADC with voltage range of 0 to 4V. What is the value of the feedback resistor required for an inverting amplifier circu..
Calculate the electric field intensity at a distance 'd' along the z-axis in terms of a,b,c, and d. Explain your reasoning. This result should be analytic.
Find the difference between the volume of the frustum of a square pyramid whose lower and upper base edges are 8 and 6 ft
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