1.

  The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct? [NDA]

A. 110 V is safer but more expensive to maintain
B. 110 V is safer and cheaper to maintain
C.  Dynamo
D. 110 V works better at higher latitudes
Answer» B. 110 V is safer and cheaper to maintain


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