Electromagnetic Induction & AC · JEE Main previous year questions

2016 2 questions

1. Q552016 · 3 Apr 2016 · Shift 1

   An arc lamp requires a direct current of 10 A at 80 V to function. If it is connected to a 220 V (rms), 50 Hz AC supply, the series inductor needed for it to work is close to :

   1. A.0.044 H
   2. B.0.065 H
   3. C.80 H
   4. D.0.08 H
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   Answer: B

2. Q572016 · 3 Apr 2016 · Shift 1
   
   1. A.$A$ for transformers and $B$ for electric generators.
   2. B.$B$ for electromagnets and transformers.
   3. C.$A$ for electric generators and transformers.
   4. D.$A$ for electromagnets and $B$ for electric generators.
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   Answer: B