Electrical Machines-I Lab

List of Experiments / Activities

1. Note: Minimum ten experiments are to be performed from the following list, out of which there should be at least two software-based experiments.
2. 1To obtain magnetization characteristics of a DC shunt generator.
3. 2To obtain load characteristics of a DC shunt generator andcompound generator (a) Cumulatively compounded (b) Differentially compounded.
4. 3To obtain efficiency of a DC shunt machine using Swinburne’s test.
5. 4To perform Hopkinson’s test and determine losses and efficiency of DC machine.
6. 5To obtain speed- torque characteristics of a DC shunt motor.
7. 6To obtain speed control of DC shunt motor using (a) armature resistance control (b) field control
8. 7To obtain speed control of DC separately excited motor using Ward-Leonard.
9. 8To obtain equivalent circuit, efficiency and voltage regulation of a single-phase transformer using O.C. and S.C. tests.
10. 9To obtain efficiency and voltage regulation of a single-phase transformer by Sumpner’s test.
11. 10To obtain 3-phase to2-phase conversion by Scott connection.
12. 11To demonstrate the parallel operation of three phase transformer and to obtain the load sharing at a load.
13. Note: Any two experiments from above list should also be performed by students on Virtual Lab.