hi am vijina k, doing m-tech .i would like to get details on load test on 3 phase slip ring induction motor pdf including circuit diagram and sample graphs...... thanks in advance. ....etc

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My name is jay keshvala and i want this practical's abstract.. ....etc

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AIM:
To conduct the no load & blocked rotor test on 3- phase induction motor
& to draw the equivalent circuit of 3- phase squirrel cage induction motor.
FUSE RATING :-
125/100 * 7.5 A ≈ 10A
THEORY :-
A 3-phase induction motor consists of stator, rotor & other associated parts. In the stator
,a 3- phase winding (provided) are displaced in space by 120. A3- phase current is fed to the winding so that a resultant rotating magnetic flux is generated. The rotor starts rotat ....etc

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AIM :
To conduct a direct load test on a 3-phase slip ring induction motor and to draw the performance characteristics.
FUSE RATING-
FOR- STATOR- 125% 0f 7.5A = 10A
FOR ROTOR – 125% of 11A = 15A
THEORY:
Slip ring induction motor is also called as phase wound motor. The motor is wound for as many poles as the no. of stator poles and always wound 3-Ф even while the stator is wound two-phase. The other three windings are brought out and connected to three insulated slip-rings mounted on t ....etc

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AIM:
To synchronize and operate the two electric sources in parallel with bus bar arrangement and draw the performance characteristic curves.
NAME PLATE DETAILS:
3Ǿ alternator DC shunt motor 3ǾLoad
FUSE RATING:
125% of rated current (full load current)
For DC shunt motor:
For ac alternator
PRECAUTIONS:
(1) The motor field rheostat should be in minimum resistance position.
(2) ....etc

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AIM:
To determine the performance characteristic of a given single phase capacitor start induction motor by conducting load test.
FUSE RATING :
Fuse rating = 125% of rated current = 125/100 * 7.5
≈ 10A
THEORY:
The single phase induction motor is more or less a polyphase induction motor. The only
difference is that is given supply in single phase. This motor connect and motor function
w ....etc

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AIM
To conduct the load test on single phase alternator.
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
1. Note down the name plate details of motor and alternator
2. Connections are given as per circuit diagram.
3. The DPST is closed on supply side.
4. Using three point starter, the moto ....etc

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FUSE RATING:
(a)For Motor- 125% of rated current
= 125% of 17A=21.25A=25A
(b)For Alternator- 125% of rated current
=125% of 4A= 5A
THEORY:
In a salient pole alternator, the reactance of magnetic circuit along is along its quad stator axis. The alternator is driven by auxiliary prime mover at a speed slightly less than the synchronous speed under these conditions. The armature current is when the armature current mmf is in line with the field poles. The reactance by the magnetic field current is minim ....etc

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AIM:
To draw the performance characteristics of 3-phase squirrel cage induction motor by conducting load test.
THEORY:
A 3-phase induction motor consists of stator and rotor with the other associated parts. In the stator, a 3-phase winding is provided. The windings of the three phase are displaced in space by 120º.A 3-phase current is fed to the 3-phase winding. These windings produce a resultant magnetic flux and it rotates in space like a solid magnetic poles being rotated magnetically.

....etc

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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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