Procedure to Perform the EXPERIMENT

Step 1: Scroll Down the page to vary the Input Voltage.
Step 2: Shift the MCB switch to start the power and note the phase. Initially it’s in RBY phase and can changed further.
Step 3: Put on the switch of Autotransformer to start the motor.
Step 4: Note the direction of rotor, which depends on the phase that we set using phase switch.
Step 5: Click on the TACHOMETER to obtain the speed of the motor and note it down.
Step 8: Put off the switch of Autotransformer when you wish to stop the rotor.
Step 9: We can change the phase only by switching off the MCB.
Step 10: Repeat the steps from 2 to 6 and each time note the direction of rotor and RPM from Tachometer.

INPUT_VOLTAGE 0

To study running and speed reversal of a three-phase induction motor and record speed in both directions.