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A 440-V three-hase Y-connected synchronous motor has a synchronous reactance of 1.5 ohms per phase. The field current has been adjusted so that the torque angle is 28 degrees when the supplied power to the motor is 90kW. Determine:
a.) The magnitude of the internal generated oltage |Ea| in this machine.
b.) The magnitude and angle of the armature current in the machine.
c.) The motor's power factor.
d.) The absolute maximum power this motor could supply if the field current remains constant.
e.) The magnitude of the armature current and motor's new power factor if field current is decreased by 10%.
Tones Input In To An Amplifier, Suppose two tones are input in to an amplifier. The tones are pure sinusoids with one at frequencies 8GHz and the other at frequency 8.03GHz,(delta f =0.03GHz).
The bandwidth of interest is between 0.5 and 50 Hz and has peak amplitude of approximately +/-1 mV. -a. Design and draw a block diagram (not circuit) of the signal conditioning portions (everything before ADC) of your system.
Calculate the de Broglie wavelength, for: (a) An electron with kinetic energy of (a) 1.0 eV, and (ii) 100 eV. (b) A proton with kinetic energy of 1.0 eV. (c) A singly ionized tungsten atom with k in.
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
What is the fundamental frequency of the spectrum of the square wave? What is the magnitude of the fundamental frequency component of the spectrum of the square wave?
The lamp is then inserted in a DC circuit and it is noticed that as the voltage increases the resistance also increases. How do you explain this apparent contradiction with Ohm's law Why does the lamp resistance increase with voltage
an amplifier with a 1 MHz bandwidth and a 20 micro-V input signal. The input noise = 1 micro-V, output signal = 6.0 mV, and output noise = 1 mV. Find (a) SNR at the input Pin = Pn(in)= K(T)BW= 1.38*10-23(290)1MHz= 4*10-15W
A slotted line is used to measure the voltage maximums and voltage minimums on a transmission line with a characteristic impedance of 50 . The voltage maximum is measured as 7.5 V and the minimum is 5 V. The line is terminated with a purely resist..
How do you draw the standard form simulation diagram given a higher-order differential equation; and how to make adjustments if the output must be put in the state equation form, y=Cx+Du.
3)What factors started the decline in the nuclear power industry, and what events essentially ended new construction of nuclear power plant 4)What are three advantages of using AC power over using DC power
Describe why interrupts are not appropriate for implementing synchronization primitive in multiprocessor systems.
consider the back to back cascade of an ideal C to D and D to C converter. Both have the same sampling rate fs. Suppose that the signal being sampled is: x(t) = cos(324*pi*t - pi/4) + cos(80*pi*t - pi/4)
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