JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD 
III Year B.Tech EEE I-Sem  L T/P/D  C 
-  -/3/-  2 
ELECTRICAL MACHINES LAB – II 

The following experiments are required to be conducted as compulsory experiments: 

1. O.C. & S.C. Tests on Single phase Transformer 
2. Sumpner’s test on a pair of single phase transformers 
3. Break test on three-phase Induction Motor. 
4. No-load & Blocked rotor tests on three - phase Induction motor 
5. Regulation of a three - phase alternator by synchronous impedance & m.m.f. methods 
6. V and Inverted V curves of a three - phase synchronous motor. 
7. Equivalent Circuit of a single phase induction motor 
8. Determination of Xd and Xq of a salient pole synchronous machine 

In addition to the above eight experiments, atleast any two of the following experiments are required to be conducted from the following list: 

1. Parallel operation of Single phase Transformers 
2. Separation of core losses of a single phase transformer 
3. Scott connection of transformers
4. Regulation of three-phase alternator by Z.P.F. and A.S.A methods 
5. Efficiency of a three-phase alternator 
6. Heat run test on a bank of 3 Nos. of single phase Delta connected transformers 
7. Measurement of sequence impedance of a three-phase alternator.