Electrical Engineering Unit 4 — Transformers (EMF, Ratios, Losses, Efficiency)

20 cards

• What is the working principle of a single-phase transformer?
• Why should a transformer not be connected to DC?
• Write the transformer EMF equation for sinusoidal flux.
• Numerical: A 100-turn secondary has maximum flux 0.01 Wb at 50 Hz. Find induced RMS EMF.
• State the ideal transformer voltage ratio and turns ratio.

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