A. on full-load
B. on overload
C. on leading power factor
D. on zero power factor
Answer: C
Explanation:
B. on overload
C. on leading power factor
D. on zero power factor
Answer: C
Explanation:
- Voltage regulation is the change in secondary terminal voltage from no load to full load at a specific power factor of load and the change is expressed in percentage.
- Voltage regulation for the transformer is given by the ratio of change in secondary terminal voltage from no load to full load to no load secondary voltage.
- In a transformer, minimum voltage regulation occurs when the power factor of the load is leading.
- The voltage regulation of the transformer is zero at a leading power factor load such as a capacitive load.
- This is the leading power factor at which voltage regulation becomes zero while supplying the load.
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