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Three identical coils, each having a resistance of 10 ohms and a reactance of 10 ohms are connected in (i) star (ii) delta, across 400v, 3-phase supply.
Find in each case the line current and the readings on each of the wattmeters connected to measure the power.
A NEMA design B, 3-phase, 60 Hz, Induction motor is rated: 60 HP, 460V, 71A, 93.0% efficiency, NEMA code G, 1180 RPM: A. What is the power factor of the motor B. What is power factor of the motor when operating at 1/2 load
For the conditions below, sketch the energy band diagram for a Schottky barrier junction (semiconductoris n-type). Include the Fermi and vacuum level,Fm, Fs, and label all features ofinterest.
After having the VHDL code tested, make sure to run ISE-Simulator. Since there are 4 inputs, modify the test-bench code for all sixteen possibilities. View the waveform and test it against your truth table.
A uniform plane wave in a lossy medium has a phase constant of1.6 rad/m at 10MHz and its magnitude is reduced by 60% for every 2m traveled. (a) How much attenuation will the wave suffer indB/m
A simple voltage divider circuit is used to measure the output of a transducer whose total resistance is 1000 ± 1percent. The internal resistance of voltmeter is 10000 ± 5percent, and the meter is calibrated to read with in ½ % ofthe true voltage ..
The data inputs I0 through I7 are wired as follows: I0 = I1 = 0, I2 = I6 = , I3 = I5 = I7 = 1; and I4 = D. (a) Determine the Boolean function that the MUX implements. (b) Implement the function using a 4×1 MUX with minimum extra logic gates.
1. a nichrome wire 12 ft long and .011 inch diameter conducts 1.83A when 120v are applied. what is the resistivity of nichrome 2. Copper windings of an electric motor at room temperature of 25 degrees C has resistance of .20(r).
A transformer is plugged into a 120 V rms source and has a primary current of 300 mA rms. The secondary is providing 18 V across a 10 load. What is the efficiency of the transformer
Construct a horizontal line on your I versus V graph at the point I = 1 mA. This line will intersect each of the sloping lines at two separate points. Explain the significance of each of these intersections
A separately excited dc generator produces 400 v at 1500 rpm under open circuit conditions. Find the induced emf if the speed changes to 2000 rpm. Assume the flux is constant.
Given the 16-bit value 1010 0101 1001 1000, what operation must be performed, and what operand is needed, in order to (a) set the most significant 8 bits to 1s (b) clear the bits in even positions (the left most bit is 15 andthe right most bit is 0) ..
A plane electromagnetic wave of frequency 300 MHz propagates in homogeneous sea water (ε=80,σ=1) along the z-axis. The effective field strength at the excitation point(point of origin) is 0.1V/m.
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