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what are advantages of dc over ac supply?
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Answer Posted / ramu
dc has advts because
except electro mechanical generators all other readily
available sources of energy is dc.
examples
1. batteries give dc supply based on chemical energy. two types
(a)primary type: non rechargeable i.e zinc carbon
batteries available in AA, AAA, C, D type 1.5 volts cells
(b) secondary rechargeable i.e
lead acid batterie(used in auto mobiles 12v 6v etv)
niickel cadmium cells ( used in camera batteries)
lithium ion batteries ( used in cell phones and
laptops)
2. solar cells also provides dc power
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