Question

The losses in an ideal transformer will be:

• A. Zero
• B. Maximum
• C. Minimum
• D. Negative

Answer 1

The Correct Option is A

An ideal transformer is a theoretical model used for analysis. It assumes perfect conditions with:
No core losses (like hysteresis and eddy current loss),
No copper losses (i.e., resistance of windings is zero),
Perfect magnetic coupling (i.e., 100% flux linkage),
No leakage flux. Hence, in an ideal transformer, the output power is equal to the input power. That means: [ textEfficiency = fractextOutput PowertextInput Power times 100% = 100% ] This implies that the losses are zero. Real transformers do have losses, but ideal transformers are assumed lossless for simplification in calculations.