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1. Explain what is meant by standstill reactance of induction motor rotor. How does it vary with speed?
2. The stator of a slip-ring induction motor with slip-ring terminals open-circuited has a stator excited from 3-phase source. The rotor is run by a prime mover. What will be the frequency of rotor induced emf at the following speeds?
(a) Half synchronous speed in the same direction as the air-gap field (AGF)
(b) Half synchronous speed in opposite to AGF
(c) At synchronous speed in opposite direction to AGF
Plot the values of Im and E2 superimposed on the log-log plot shown on a previous page (134) in the lecture notes. Is the 600:5 CT in saturation or not?
The purpose of this experiment is to setup the MASM assembler and linker. This will allow you to write assembly language source files and create executable code, such as .EXE and .COM files
A coil having an inductance of 10uH is intended for applications around 1-MHz frequency. Its Q is specified to be 200. Find the equivlent parallel resistance R. What is the value of the capacitor required to produce responance at 1MHz
Determine the voltmeter reading four time constants after the switch is closed.- Find the time that must pass before iC drops to 3 µA.
Should managers inform employees that their Web behavior is being monitored? Or should managers monitor secretly? Why or why not?
Design the low pass filter with the 3 dB point at 1Khz. DC gain is 0 dB. use the C value as 100 uf and input ac magnitude 1 V. use the AC simulation between 1 mHz to 1 Khz.
Consider the NMOS R-S flip-flop in Figure -Determine the voltage at S that will cause the flip-flop to change states.
1. Determine the wavelengths for electromagnetic waves in free space with the following frequencies: 1 kHz, 100 kHz, 1 MHz, 1 GHz. 2. Determine the frequencies for electromagnetic waves in free space with the following wavelengths: 1 cm, 1 m, 10 m..
Assume that a 5 mile long feeder is supplying a 2000 kVA load of increasing load density starting at a substation. If the K constant of the feeder is given as 0.00001%VD per kVA·mi,
Interpret manufacturer's data sheet to select appropriate combinational logic devices for specific purposes
Find the longest allowable evaluate time if the decay in output voltage is to be limited to .2V. If the precharge interval is much shorter then the maximum allowable evaluate time, find the minimum clocking frequency required.
Find the rms values of the following sinusoidal waveforms:
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