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Q. Consider an elementary three-phase, four-pole alternator with a wye-connected armature winding, consisting of full-pitch concentrated coils. Each phase
coil has three turns, and all the turns in any one phase are connected in series. The flux per pole, distributed sinusoidally in space, is 0.1 Wb. The rotor is driven at 1800 r/min.
(a) Calculate the rms voltage generated in each phase.
(b) If a voltmeter were connected across the two line terminals, what would it read?
(c) For the a-b-c phase sequence, take t = 0at the instant when the flux linkages with the a-phase are maximum.
(i) Express the three phase voltages as functions of time.
(ii) Draw a corresponding phasor diagram of these voltages with the a-phase voltage as reference.
(iii) Represent the line-to-line voltages on the phasor diagram in part (ii).
Q. An RL series circuit carries a current of 0.02 cos 5000t A. For R = 100 and L = 20 mH, find the impedance of the series combination and determine the voltage across the series
Multiprocessing - Many Processors Many users Many Programs Multiprocessing or also called distributed processing system provides solution to problems of above timesharing
Calculate Voltage and Current Phasors on a Phasor Diagram A synchronous motor is operated at rated load and unity power factor. The field current is increased by 20%. Show the
Q. A single-line diagram of a three-phase transformer bank connected to a load is given in Figure. Find the magnitudes of the line-to-line voltages, line currents, phase voltages,
OUT Output Instruction This instruction is used send data byte stored in the accumulator to the output port whose address specified in the instruction. The instruction
Classification of Feedback Control Systems by Control Action A more common means of describing industrial and process controllers is by the way in which the error signal E(s) i
Q. An operational amplifier stage is typically represented by the circuit of Figure. For the values given, determine V out and the power supplied by the 2.5-V source.
Ask question #Minimum 100 wThe voltage v across a capacitor at time t seconds is given by the following table. Use the principle of least squares to fit a curve of the form v = ae
a) Write down a short note on compensators. b) Classify filter with relevant sketches. c) Illustrate the principle and working of Analog to Digital converter.
how to calculate the sending line voltage
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