Voltage Transformation | MCQs
ٹرانسفارمر کا اصول _____ ہے؟
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A. Mutual induction
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B. Motional e.m.f
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C. None of these
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D. Ampere's law
Explanation
- A transformer works on the principle of mutual induction, where a changing current in the primary coil induces a voltage in the secondary coil.
- This is based on Faraday's Law of Electromagnetic Induction, which states that a changing magnetic field produces an electromotive force (emf).
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A. 700V
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B. 800V
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C. None of these
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D. 1000V
Explanation
The secondary voltage (Vs) is given by:
Vs = (Ns/Np) * Vp
where Ns is the number of turns in the secondary coil, Np is the number of turns in the primary coil, and Vp is the primary voltage.
Vs = (500/150) * 100 = 1000/3 *3= 1000/3 * 3=1000
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