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

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

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DGVCL Exam Paper (12-06-2016)
GUVNL is:

None of these
Gujarat Urja Vyapar Nigam Limited
Gujarat Urja Vikas Nikash Limited
Gujarat Urja Vikas Nigam Limited

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

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

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