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ഗാർഹികാവശ്യത്തിനായി വിതരണം ചെയ്യുന്ന വൈദ്യുതിയുടെ ആവൃത്തി എത്ര ?

A50 Hz,

B30 Hz,

C40 Hz,

D60 Hz

Answer:

A. 50 Hz,


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