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Two star-connected generators are connected in parallel and supply a balanced load of 1500 kVA at 11 kV line voltage and 0.8 lagging power factor. The synchronous reactances of the two machines respectively are: 35 Ω and 40 Ω. The primemover governors of the two machines are adjusted so as to equally share the power load. The phase current in one machine is 43 A, at a lagging power factor. Calculate:
(a) the phase current in the second machine,
(b) the induced emf of each machine, and
(c) the power factor at which each machine operates.
A binary source has output probabilities [0.85, 0.15]. The channel can transmit 350 binary symbols per second at the capacity of 1 bit/symbol. Determine the maximum source symbol rate if transmission is to be accomplished.
Design a circuit to multiply two 2-bit numbers -a,b and c,d and produce a 4-bit product -w,x,y,z. Show the truth table and the equations.
The 1kHz signal is sampled at a rate of 4 k-samples/s and the sequence of samples is sent to a loud speaker. Using a diagram explain why high frequency tones are heard an what must be done to eliminate them.
A solar cell is uniformly illuminated by monochromatic light of 700nm with power density of 20 mW/cm^2. What is the corresponding incident photon flux What is the upper limit to Jsc if the bandgap is 1.4eV
This machine is now connected as a cumulatively compounded dc motor with Radj = 120Ω. What is the full-load speed of this motor?
Sometimes the partial fraction expansion is not needed in finding the inverse Z-transform- instead the properties of the transform can be used. Consider the function F(z) = z+ 1/z^2(z - 1) a. Determine whether F(z) is a proper rational function as ..
Most dc voltmeters produce a reading equal to the average value of the voltage measured. The mathematical definition of the average value of a periodic waveform is Vavg = 1/T ∫0T v(t)dt, in which T is the period of the voltage v(t) applied to the m..
The mean and the variance of a binomial distribution with parameters n and theta are 12 and 3. Find the probabilities: a. (P X or equal 7).
write a program to compute the power loss in a transmission line with a resistance of .05ohms/mile. compute the power loss if 500kw of power is transmitted from a power generating station to cities at distances of 20, 30, 40, 50,...100 miles at 10..
Determine the minimum oxide thickness in the field region (the field-oxide thickness) needed to prevent current leakage between neighboring MOSFETs. Neglect the oxide charge, and consider aluminum gate (the worst-case scenario).
Laboratory measurements on a dc voltage source yield a terminal voltege 75V with no load connected to the source and 60V when loaded with a 20 Ohm resistor. A)what is the thevenin equivalent with respect to the terminals of dc voltage source
A person has a 72 V battery along with 6, 9, and 18 ohm resistors. They are first wired in series, then is parallel. First, sketch each circuit. Then, find the current in each resistor as well as the voltage across each resistor for each resistor,..
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