Electrical Machines - II Lab

List of Experiments / Activities

1. 1To perform no load and blocked rotor tests on a three phase squirrel cage induction motor and determine equivalent circuit.
2. 2To perform load test on a three phase induction motor and draw Torque -speed characteristics
3. 3To perform no load and blocked rotor tests on a single phase induction motor and determine equivalent circuit.
4. 4To study speed control of three phase induction motor by varying supply voltage and by keeping V/f ratio constant.
5. 5To perform open circuit and short circuit tests on a three phase alternator.
6. 6To determine V-curves and inverted V-curves of a three phase synchronous motor.
7. 7To determine the direct axis reactance (Xd) and quadrature axis reactance (Xq) of synchronous machine.
8. 8To study synchronization of an alternator with the infinite bus by using: (i) dark lamp method (ii) two bright and one dark lamp method.
9. 9To determine speed-torque characteristics of three phase slip ring induction motor and study the effect of including resistance, or capacitance in the rotor circuit.
10. 10To determine speed-torque characteristics of single phase induction motor and study the effect of voltage variation.
11. 11To determine speed-torque characteristics of a three phase induction motor by (i) keeping v/f ratio constant (ii) increasing frequency at the rated voltage.
12. 12To draw O.C. and S.C. characteristics of a three phase alternator from the experimental data and determine voltage regulation at full load, and unity, 0.8 lagging and leading power factors.
13. 13To determine steady state performance of a three phase induction motor using equivalent circuit.
14. 14Load Test on Three Phase Alternator. *The available experiments from above list may be performed on virtual lab on following virtual lab link:http://vlab.co.in/