A 6-pole, 25-Hz, three-phase, Y-connected, synchronous generator has 36 slots. There are 17 turns percoil, and the flux per pole is 94.8 mWb. Find the line voltage if there are two parallel paths. Sketch theplacement of three-phase group coils and show the winding connections. ("

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Answered: A 6-pole, 25-Hz, three-phase,…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A synchronous generator runs at 250 rpm and generates at 50-Hz. There are 216 slots, each containing 5 conductors arranged in a full-pitched winding for 3-phase star connection. All the conductors of each phase are in series and the flux per pole at no-load sinusoidally distributed over the pole pitch is 30 mWb. Find the emf induced in each phase winding and the terminal voltage.
An Armature runs at 250 r.p.m. and generates an e.m.f. at 50 Hz. There are 216 slots each containing 5 conductors. The winding is distributed and full pitch. All the conductors of each phase are in series and flux per pole is 30 mWb which is sinusoidal distributed.Calculate the number of pole.
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2A. What is another term for "shunt"? a) in series b) in parallel c) compounded d) none of the above 2B. Which of the following is/are a basic type of DC generator connection? a) series b) shunt c) compound d) all of the above
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A four-pole three-phase 50 hertz, star connected AC generator has 12 stator slots. There are 4conductors per slot and a sinusoidally distributed flux per pole of 36mWb. Find the terminal voltageon open circuit. If the coil span factor is 0.85 lagging.
A 110-V, three-phase, Y-connected, %pole, 48-slot, 6000-rpm, double-layerwound, synchronous generator has 12 turns per coil. If one side of the coilis in slot 1, the other side is in slot 6. There are 4 parallel paths. When thegenerator delivers the rated load at a line voltage of 110 V, the voltageregulation is 5%. What is the flux per pole?
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D2. When a generator's full-load output voltage is the same as its no-load output voltage it is said to be a) under-compounded b) flat-compounded c) over-compounded d) none of the above D3. The output of an overcompounded DC generator can be lowered by use of a a) rheostat connected in series with the series field b) rheostat connected in parallel with the series field c) rheostat connected in parallel with the shunt field d) none of the above D4. When might it be desirable to use an overcompounded generator? a) never b) always c) to compensate for line loss d) when you need a higher no-load voltage than your full-load voltage
AC Machinery Fundamentals A three-phase delta-connected six-pole winding is installed in 36 slots on a stator. There are 150 turns of wire in each slot of the windings. All coils in each phase are connected in series. The flux per pole in the machine is 0.060 Wb, and the speed of rotation of the magnetic field is 1000 r/min. What are the resulting phase and terminal voltages?
The shunt field winding of a shunt generator has a resistance of 80 ohms at 20⁰C. After several hours of continuous operation, the winding temperature rises to 50⁰C. How much is the winding resistance under this condition, Assume the resistance temperature coefficient of copper to be 0.004 ohm per degree at 0⁰C.
3.17. A 200-turn coil is rotating at a speed of 3600 rpm in a 4-pole generator. The flux per pole is 2 mWb. Determine (a) the frequency of the induced emf, (b) the maximum value of the induced emf, (c) the rms value of the induced emf in an ac generator, and (d) the average value of the induced emf in a dc generator.

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A 6-pole, 25-Hz, three-phase, Y-connected, synchronous generator has 36 slots. There are 17 turns per coil, and the flux per pole is 94.8 mWb. Find the line voltage if there are two parallel paths. Sketch the placement of three-phase group coils and show the winding connections. ("