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It is desired to achieve a time-varying magnetic flux density in the air gap of the magnetic circuit of figure of the form Bg = B0 + B1 sin wt where B0 = 0.5 T and Bl = 0.25 T. The dc field B0 is to be created by a neodymium-iron-boron magnet, whereas the time-varying field is to be created by a time-varying current.
For Ag = 6 cm2, g = 0.4cm and N = 200 turns, find:
a. the magnet length d and the magnet area Am that will achieve the desired dc air-gap flux density and minimize the magnet volume.
b. the minimum and maximum values of the time-varying current required to achieve the desired time-varying air-gap flux density. Will this current vary sinusoidally intime?
(a) Calculate thefrequency domain representation S(f)ofthis signal (b) Calculate the frequency domain representation ofthe pre-envelope S+(f) OFS(t) (c) What is thepre-envelope s+(t) of s(t)
MATLAB to design a compensator to meet the specifications - Feedback system has an open-loop transfer function
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Point charge 1.5{\rm \mu C} is located at x = 0, y = 0.30 {\rm m}, point charge -1.5{\rm \mu C} is located at x = 0 y = -0.30 {\rm m}. What are (a)the magnitude and (b)direction of the total electric force that these charges exert on a third point..
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If the amplifier is fed with a signal source having a resistance of 10 kohm, and load resistance Rl = 10 kohm is connected to the output terminal, find the resulting Av, and Gv. If the peak voltage of the sine wave appearing between base and emitt..
(b) This voltage is measured using a defective voltmeter, which always indicates a lower reading than the actual value. Suppose the voltmeter reading is 2.5*10^(-4). Calculate the probability that the error is not more than 0.5 *10^(-4).
In the system shown below Block A has a mass of 15kg and Block B has mass 5k2. It is measured that the tension in the cable is 40N. Determine the acceleration of Block A and the coefficient of kinetic friction between Block A and the ground (negle..
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Study code acquisition in frequncy hopping spread spectrum communication systems.Describe and explain why it is necessary. Design and demonstrate a code acqusition method.
The current entering the positive terminal of a device is 5e-4t A and the voltage across the device is 2 di/dt V. Find the charge delivered to the device between t = 0 and t = 2 s.
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