Class 12 > Samacheer Kalvi - English Medium > Electromagnetic Induction And Alternating Current

  • Choose the correct answer

    A step-down transformer reduces the supply voltage from 220 V to 11 V and increase the current from 6 A to 100 A. Then its efficiency is


    - (a) 1.2

    - (b) 0.83

    - (c) 0.12

    - (d) 0.9


1 Answer

  • Correct Answer:

    (b) 0.83

    Answered on 29/10/2020 at 12:25PM by Thamizh

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Unit 4. Electromagnetic Induction And Alternating Current
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