Answer very briefly II — task. Science State Board, Class 9.

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1. State the advantages of AC over DC.

a. Converting Dc to AC is a .

b. The cost of producing AC is the cost of producing DC.

2. Differentiate step up and step down transformer.

a. The number of turns in the secondary coil of a step-up transformer is than the number of turns in the primary coil.

b. The number of turns in the secondary coils in a step-down transformer is than the number of turns in the main coil.

Did you find an error?

7. Answer very briefly II