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A three-phase transmission line having a reactance of 120 ohms per phase is connected to a wye-connected load whose resistance is 160 ohms per phase. If the supply volatge is 70kV line-to-line, calculate
a) The line-to-neutral voltage per phase.
b) the line current per phase
c) the real and reactive power supplied to the load
d) the real and reacitve power absorbed by the line
e) The line-to-line voltage at the load
f) the voltage drop per phase in the line
g) The total apparent power supplied by the source
h) the total real and reactive power supplied by the source
Polyethylene with ?_r = 2.25 is used as the insulating material in a lossless coaxial line with a characteristic impedance of 50 Ω. The radius of the inner conductor is 1.2 mm.
Find the minimum Sum-of-Products (SOP) expression for the following function using Quine.
Describe why interrupts are not appropriate for implementing synchronization primitive in multiprocessor systems.
The average noise power per unit bandwidth measured at the front end of an AM receiver is 10^(-3) watt per Hertz. The modulating wave is sinusoidal, with a carrier power of 80 kilowatts, and a sideband power of 10 kilowatts per sideband.
What are the distinguishing features of the response in the pass-band? What are the distinguishing features of the response in the stop-band? What is an all pass filter?
Using many resistors and the DMM, try to determine what digits each colour band represents. Briefly explain your method and your findings in the space below.
Design a system using either a flow diagram or pseudo code that will accept a block of data words encoded as specified in Part 1; then check the parity for each data word and for the block. The system should output each of the 8-bit data words.
A certain transistor is to be operated at a collector current of 50mA. How high can VCE go without exceeding a PD(MAX) of 1.2W?
Determine the value of the output voltage due to the voltage source only (Vol), and due to the current source only (V02).
Calculate the tetrahedral bond angle, the angle between any pair of the four bonds in a diamond lattice. (Hint: represent the four bonds as vectors of equal length. What must the sum of the four vectors equal
Silicon has an absorption co-efficient of 850 cm-1 at a wavelength of 805 nm. Light of intensity 1 W/m2 at this wavelength is directed at normal incidence onto a polished silicon wafer of thickness 0.5 mm.a. Assuming a top surface reflectance of 30..
For a "Personal water craft" water is pumped from beneath the craft and discharged out the rear in a 1.25 inch diameter stream at a velocity of 75 ft/sec. Assuming that the craft and rider weighs 650lbs find the force acting on the craft and maxim..
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