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Title: REGULATION OF THREE PHASE ALTERNATOR BY EMF MMF and ZPF
Page Link: REGULATION OF THREE PHASE ALTERNATOR BY EMF MMF and ZPF -
Posted By: smart paper boy
Created at: Wednesday 10th of August 2011 12:37:21 PM
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AIM
To conduct OC, SC and ZPF test on the three phase alternator and to predetermine the regulation of 3 phase alternator by EMF method, MMF method, & ZPF method also to verify by vector diagram.
APPARATUS REQUIRED
PRECAUTION
1. The motor field rheostat should be kept in the minimum resistance position.
2. The alternator field potential divider should be in the minimum voltage position.
3. Initially all switches are in open position.
PROCEDURE
A. OC.Test
1. Note down the name ....etc
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Title: REGULATION OF 3PHASE ALTERNATOR BY EMF AND MMF METHODS
Page Link: REGULATION OF 3PHASE ALTERNATOR BY EMF AND MMF METHODS -
Posted By: smart paper boy
Created at: Friday 29th of July 2011 05:51:20 PM
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THEORY:
The regulation of a 3-phase alternator may be predetermined by conducting the Open Circuit (OC) and the Sort Circuit (SC) tests. The methods employed for determination of regulation are EMF or synchronous impedance method, MMF or Ampere Turns method and the ZPF or Potier triangle method. In this experiment, the EMF and MMF methods are used. The OC and SC graphs are plotted from the two tests. The synchronous impedance is found from the OC test. The regulation is then determined at different power factors by ....etc
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Title: hii iam ramakanth i would like to get details why mmf method is optimistic
Page Link: hii iam ramakanth i would like to get details why mmf method is optimistic -
Posted By:
Created at: Tuesday 08th of August 2017 10:58:48 PM
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HI IAM ramakanth i would like to know why the mmf meathod is optimistic ? and why emf meathod is pesimistic ....etc
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Title: REGULATION OF THREE-PHASE SALIENT POLE ALTERNATOR BY SLIP TEST
Page Link: REGULATION OF THREE-PHASE SALIENT POLE ALTERNATOR BY SLIP TEST -
Posted By: smart paper boy
Created at: Wednesday 10th of August 2011 12:44:37 PM
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AIM
To conduct the slip test on three phase alternator and predetermination the regulation through vector diagrams
APPARATUS REQUIRED
PRECAUTION
1. The Motor field Rheostat should be kept in minimum resistance position.
2. The Alternator field should be kept open throughout the experiment.
3. The direction of rotation due to prime mover and due to the Alternator run as the motor should be same.
4. Initially all the switches are kept open
PROCEDURE
1. The name plate details of the motor an ....etc
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Title: procedure related to 3 phase alternator by synchronous impedance method
Page Link: procedure related to 3 phase alternator by synchronous impedance method -
Posted By:
Created at: Friday 02nd of November 2012 12:37:00 AM
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Title: advantages and disadvantages of mmf method
Page Link: advantages and disadvantages of mmf method -
Posted By:
Created at: Thursday 12th of April 2018 07:19:05 AM
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Title: REGULATION OF 3-PHASE ALTERNATOR BY POTIER AND ASA METHODS
Page Link: REGULATION OF 3-PHASE ALTERNATOR BY POTIER AND ASA METHODS -
Posted By: smart paper boy
Created at: Friday 29th of July 2011 05:51:34 PM
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AIM:
To predetermine the regulation of three phase alternator by Potier and ASA methods and also to draw the vector diagrams.
FORMULAE USED:
Percentage regulation = Eo – Vrated x 100 (For both POTIER & ASA methods)
Vrated
PRECAUTION:
(i) The motor field rheostat should be kept in the minimum resistance position.
(ii) The Alternator field potential divider should be in the position of minimum potential.
(iii) Ini ....etc
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Title: Automatic voltage regulation of alternator used in UKAI PP
Page Link: Automatic voltage regulation of alternator used in UKAI PP -
Posted By: chodekiran
Created at: Friday 05th of March 2010 12:56:28 PM
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Title: Automatic voltage regulation of alternator used in UKAI PP
Page Link: Automatic voltage regulation of alternator used in UKAI PP -
Posted By: chodekiran
Created at: Friday 05th of March 2010 12:53:47 PM
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Title: Harmonic effects on synchronous generators voltage regulation
Page Link: Harmonic effects on synchronous generators voltage regulation -
Posted By: seminar class
Created at: Saturday 12th of March 2011 11:50:31 AM
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presented by:
J.Chaithanya Bharathi
A.L.Harika
P.Divya Sree
ABSTRACT
The performance of any machine can be analyzed with reference to parameters like power factor, total harmonic distortion, voltage regulation, etc. These parameters alter when a machine is subjected to different loads. Depending on the load connected to the system, the voltage and current waveforms are varied. Due to the effect of harmonics, distortion of waveforms from sinusoidal to non sinusoidal is c ....etc
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