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Consider the two-pole two-phase induction motor having two windings displaced 90° in space shown in Figure.The fields produced by the windings are given by Ba = Kia(t) cos(θ ) and Bb = Kib(t) cos( θ-90°). The two-phase source produces currents given by ia(t) = Im cos( t) and ib(t) = Im cos( ωt- 90° ). Show that the total field rotates. Determine the speed and direction of rotation. Also find the maximum flux density of the rotating field in terms of K and Im.
If we want to correct the power factor to 0.9 lagging, what is the value of Q we need to inject.
A voltage of 60cos(4πt) V appears across the terminals of a 3 m-F capacitor. Calculate the current through the capacitor and the energy stored in it from t=0 to t=0.125 sec.
Find the system transfer function of a causal LSI system whose impulse response is given byh[n] = (-0.5)^n-1 sin[0.5(n-2)]u[n-2] and express the result in positive powers of z. Hint: The transfer function is just the z-transform of impulse respon..
Why we use Supernode circuit analysis
A 75- ohm lossless transmission line is interfaced to a load impedance that consists of a series connected resistor of 30 ohm and a capacitor of 10 pF. At an operating frequency of 2 GHz and for a wavelength of 10 cm.
A 5000-VA 480/120-V conventional transformer is to be used to supply power from a 600-V source to a 120-V load. Consider the transformer to be ideal, and assume that all insulation can handle 600 V. Sketch the transformer connection that wil..
The bandwidth of a series resonant circuit is 400 Hz. (a) If the resonant frequency is 4000 Hz, find Q. (b) If R = 10 ohm, what is the value of XL at resonance
a) Design an inverting amplifier with a closed-loop gain of -100V/V and an input resistance of 1 KΩ. b) If the op amp is known to have an open-loop gain of 1000V/V, what do you expect the close-looped gain of your circuit to be(assuming the resist..
design a decimal adder for digits represented in the excess-3 code. Show that the correction after adding two digits with a 4-bit binary adder is as follows (a) The output carry is equal to the carry from the binary adder
A parking garage charges a $ 5.00 minimum fee to park for up to three hours and an additional $ 1.00 per hour for each hour over the hours. the maximum charge for any given 24 hours period is $ 2.00.
calculate the capacitance of the capacitor and the inductance of the inductor. for the capacitor it's going to be 1/(j*2*pi*frequency*capacitance) and (j*2*pi*frequency*inductance) for the inductor but what are the valves for the capacitance and ..
Given a used area of 2016 ft2 and unused area of 2000ft2, (a) find the minimum number of 25-amper lighting branch circuits required for residence, (b) how many outlets are permitted on a lighting branch circuit
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