Report writing (Minimum 350 words.) Reference must be mentioned at the end of the report. For each question

1- With necessary sketch, Explain the mode of operation of chopper which is turn off due to external circuit voltage . Write its merits and demerits.

2- Thyristor switched reactor(TSR) for power factor improvement

3-  What motor is used in the washing machines? Explain in detail the construction and working of the motor used.