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A synchronous motor excited by a 5kV source has a synchronous reactance of 5Ω. The motor is running without any mechanical load (i.e., the output real power is zero). Ignore all losses and calculate the equivalent field voltage Ef that delivers 3 MVAr to the source. Also, draw the phasor diagram.
design a system comprising a pulley actuated by a stepper motor to lift objects of maximum mass of 1kg. No gear box is required. A 48 VDC power source is available. Select a pulley (specify the diameter) and a stepper motor.
The diagram below is the schematic of a protection system for a 33/11kV double transformer substation in which the 33kV switchboard and the 11kV switchboard are at the same location.
Find the output force (from the large piston) when the input force is 10 lb.
The teacher decides that he will not lecture unless at least k of the n students enrolled in class, are present. Each student will independently show up with probability pg if the weather is good, and with pb if the weather is bad.
He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that the clown must exert to yank his feet out from under himself?
One day, John and Amparo, a senior EE student, were trying to fix Jasmine's old-fashioned (projection) TV, which contained the circuit shown below, apparently with a bad connection. John said that the RLC series branch had an impedance of 1ohm
The sampling frequency in a DSP system is fs=8 kHz. Anti-aliasing filter used in the system is the second-order Butterworth filter with cutoff frequency of fc=3.4 kHz. What is the percentage of aliasing level at the frequency f=2.5 kHz
Find the force and stroke that results at F2
What is the electric potential at the center of the square?
Design a Miller integrator with a time constant of 0.1 s and an input resistance of 100 k ohm. A dc voltage of -1 volt is applied at the input at time 0, at which moment vO = -10 V. How long does it take the output to reach 0 V to +10 V
design an alarm clock using VHDL and implement in FPGA (Basys2 Board). the scope is that, when the time and alarm time are equal, then alarm rings. A sign or some kind of indication will be shown on a LCD monitor.
A 4 MHz time-harmonic uniform TEM plane wave that is traveling through a lossy nonmagnetic medium has an amplitude that attenuates by 20% for each meter of propagation. The electric field of the wave leads the magnetic field by 35°
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