Question:
(i) Draw a step-up transformer diagram. Describe its working principle. Explain 3 energy loss causes.
(ii) Does a step-up transformer violate energy conservation? Explain.
(iii) A step-up transformer (N_p=200, N_s=3000) has V_p=90V, I_s=2A. Calculate V_s and I_p.
(i) Draw a step-up transformer diagram. Describe its working principle. Explain 3 energy loss causes.
(ii) Does a step-up transformer violate energy conservation? Explain.
(iii) A step-up transformer (N_p=200, N_s=3000) has V_p=90V, I_s=2A. Calculate V_s and I_p.
(ii) Does a step-up transformer violate energy conservation? Explain.
(iii) A step-up transformer (N_p=200, N_s=3000) has V_p=90V, I_s=2A. Calculate V_s and I_p.
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Transformer operation and energy conservation
Updated On: Feb 16, 2025
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Solution and Explanation
(i) Diagram should show primary/secondary coils and iron core. Principle: Electromagnetic induction. Losses: Copper, iron (eddy currents, hysteresis), flux leakage. (ii) Power in = power out (ideally). (iii) V_s/V_p = N_s/N_p. V_p*I_p = V_s *I_s.
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