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Consider the magnetic circuit shown in Figure. Assume that the reluctance of the iron is small enough so it can be neglected. The lengths of the air gaps are 0.1 cm, and the effective area of each gap is 20 cm2. Determine the total number of turns needed to produce a flux density of 0.5 T in the gaps.
A unity-feedback control system has plant transfer function g(s)=(k(s+2))/(s(s^2+4s+16)) Construct the root locus including asymptote angles, cg, break-in points and departure angles as needed for this problem.
an electric motor has an armture constant of 140, a flux of 25 mwh, an armuture current of 30 A , and a rotatio?nal speed of 1600 rpm. what is most nearly the power output in watt
Design a FIR linear phase filter by approximating the ideal frequency reponse (H^{d}(e^{jwt})=1, for |w|
A semiconductor, in thermal equilibrium, has a hole concentration of p0 = 2x1016 cm-3. The minority carrier life time = 3x10-7 s. (Assume, ni = 1010 cm-3) (a) Determine the thermal equilibrium recombination rate of electrons.
The average intensity of sunlight reaching the earth is 1390W/m2. A charge of 2.38 x 10-8 C isplaced in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
Find values of the intrinsic carrier concentration ni for silicon at -70, 0, 20, 100, and 125 °C. At each temperature, what fraction of the atoms is ionized. Recall that a silicon crystal has approximately 5×1022 atoms/cm3.
The owner wants to an addition to the building in the above question which will have a large kitchen and dining area. It will add an overall 120 kW of kitchen loads (pf = 0.95 lag). What is the new profile of the total building load in terms of P,..
If Vid is 20-mV peak-to-peak sine wave applied in a balanced manner but superimposed on Vcm = 0.5 V, what is the lowest value that Vdd must have to ensure saturation -mode for Q1 and Q2 at all times. Assume Vt = 0.5 V.
he armature at the other end of thecommutator is tapped and connected to balanced 3-Phase voltages, sothat a rotating field is produced, The speed of this rotating fieldis 3000 r.p.m. (1) clockwise and (2) anticlockwise,.Find thefrequency of the b..
but the K input of the second JK flip flop depends on the negated output of the first JK flip flop and x AND together. How to trace that when both JK flip flops depend on input from the other one
Consider the circuit shown in Figure. Prior to t = 0, v1 = 100V, and v2 = 0. Immediately after the switch is closed, what is the value of the current [i.e., what is the value of i(0+)]?
Two identical 138 kV Y: 13.8 kV DELTA 100 MVA tap changing transformer each with a per unit series impedance of j.1 ohms are operating in parallel and supplying a 180 MVA load at 13.8 kV and .8 lagging pf.
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