DGVCL Exam Paper (12-06-2016)
The main advantage of AC over DC is:

Conversion flexibility from one voltage level to other
All of these
AC is easy to maintain & can be easily distributed at long distances
AC can be easily converted into DC by using a rectifier

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DGVCL Exam Paper (12-06-2016)
The following formula is correct:

All of these
Load facto r= Average load for a period/Peak load for the same period
Load factor = Average load for a period x Peak load for the same period
Load factor = Average load for a period + Peak load for the same period

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DGVCL Exam Paper (12-06-2016)
A Step Up transformer :

Steps down the level of current
(a) and (b) only
Steps up the level of Voltage
Step up the level of Frequency

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