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Two in finitely long, very thin wires lie on the x and y axes and carry currents as shown in Figure.
a. Show the direction of the forces on the wires due to the magnetic fields on the positive and negative part of each axis, assuming that Ix and Iy are both positive.
b. Compute the torque on the wire that lies on the y axis.
The springs effect is addressed below. As a relay some contacts are connected to, and move with, the armature. Other contacts are stationary and would make or break contacts as the armature moves.
A student from electromechanical systems class planned to construct a transformer that will cause an actual load resistance of 48.2-ohm to appear as 116.3-ohm to an AC voltage source of 211.3 V rms.
(a) Impulse Response of a DT LTI system is given by h[n]=(.2^n)u[n] Determine the step response of y[n] of the system for all n. (b) Given h[n]=(a^n)u[n] and x[n]=(.2^n-5)u[n-5] Evaluate y[n]=h[n]*x[n] for
Make a plot of group velocity versus frequency for frequencies from 0 Hz to 500 kHz. Your plot should have 3 different curves for the three modes of propagation. Be sure to identify the modes and all cutoff and resonant frequencies clearly.
What current must be maintained in a square loop ( 50 cm on a side ) to create a torque of 1.0 N . m about an axis through its center and parallel to one of its sides when a magnetic field of magnitude 70 mT is directed at 40o to the plane of the ..
If one of the normal vectors to an interface is n-hat = 1/sqrt(13) (3x-hat + 2z-hat) and the electric field just below the interface is E1 = 9x-hat + 2y-hat + 2z-hat, what is the vector part of E1 normal to the interface
The rotor winding consists of 55 turns per pole with a winding factor ofKr=0.89. The peak value of a fundamental air-gap flux densityis limited to 1.0T and the rotor winding current to 2900A.C
The electric motor in a street car develops a power output of80 hp at 1200 rpm as the vehicle moves up a hill at a speed of 30mph. Assume the gearing losses are negligible, calculate: (a) The torque developed by the motor.
Determine the initial stored charge. Determine energy of the capacitor. If this capacitor is discharged to 0 V in a time interval of 1 s, find the average power delivered by the capacitor during the discharge interval.
A power factor correction capacitor bank, with negligible resistance, draws a current of 625 amperes whenconnected to its 480 VAC, 60 Hz source. Calculate the capacitive reactive power of the capacitor bank.
What is the maximum message bandwith for which the system operates satisfactorily? Determine the output signal to quantizing noise ratio when a full-load sinusoidal modulating wave of frequency 1 MHz is applied to the input.
Design an open-circuited, shunt stub matching network to match a 125 + j20 ohm load to a 700 MHz, 50 ohm generator. Show the lengths of your transmission lines in fractions of a wavelength. Show steps to solution please.
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