# Open and short circuit tests

A 4 kVA 200/400 V single phase 50 Hz transformer has the following data on O. C. (open circuit) &

S. C. (short circuit) test:

O. C. Test: 200 V 0.8 A 70 W (Low Voltage side)

S. C. Test: 20 V 10 A 80 W (High Voltage side)

Find Full Load efficiency and regulation at pf 0.8. Find also the magnetizing component of No Load current.

S. C. (short circuit) test:

O. C. Test: 200 V 0.8 A 70 W (Low Voltage side)

S. C. Test: 20 V 10 A 80 W (High Voltage side)

Find Full Load efficiency and regulation at pf 0.8. Find also the magnetizing component of No Load current.

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