Electrical Machine Lab

Amount

To perform O.C. and S.C. test on a 1-phase transformer and to determine the parameters of its equivalent circuit its voltage regulation and efficiency. To determine the efficiency and voltage regulation of a single-phase transformer by direct loading.

To perform sumpner’s test on two identical 1-phase transformers and find their efficiency & parameters of the equivalent circuit.

To perform the heat run test on a delta/delta connected 3-phase transformer and determine the parameters for its equivalent circuit.

To perform the parallel operation of the transformer to obtain data to study the load sharing.

Separation of no load losses in single phase transformer.

To study conversion of three-phase supply to two-phase supply using Scott Connection.

Speed Control of DC Shunt Motor by Field current Control method & plot curve for speed versus field current. Speed Control of DC Shunt Motor by Armature Voltage Control method & plot curve for speed versus Armature Voltage.

To determine the efficiency at full load of a DC Shunt motor by performing Swineburne’s test.

To perform Hopkinson’s test on two similar DC shunt machines and hence obtain their efficiencies at various loads.

Study of Various Types of Starters for Induction Motor

To connect two 3-phase induction motor in cascade and study their speed control.

To Perform Load Test on3 phase induction motor and calculate input power , output power , torque, efficiency, input power factor, and slip for various load settings.

To perform No load and blocked rotor test on a 3 phase induction motor & determine parameters of equivalent circuits. Draw the circle diagram and compute the following 1) Max. Torque 2) Currrent 3) Slip 4) PF 5) Efficiency

To plot OCC and SCC of an Alternator To determine regulation using potier reactance method To determine voltage regulation using direct loading To determine voltage regulation of alternator using synchronous impedance method

To Synchronize an alternator across the infinite bus and control sharing .

To study effect of variation of field current upon the stator current and power factor of synchronous motor and plot V curves and inverted V curves of Synchronous motor For different values of loads

Speed control of 3- Φ Induction Motor

Xq and Xd of Alternator

DC Rectifier Unit - COMMON for both sem

Electrical Distribution and Control Panel - COMMON for both sem