Hysteresis loss in a transformer varies as

A. Bmax
B. Bmax1.6
C. Bmax1.83
D. B max2.4

Answer: B

Explanation:
Hysteresis losses:
  • These are due to the reversal of magnetization in the transformer core whenever it is subjected to the alternating nature of magnetizing force.
  • Hence, Hysteresis loss depends on the volume of material, class of material, frequency & flux density.
  • When the Materials subjected to rapid reversals of magnetism then it is having a narrow hysteresis loop hence it should have higher permeability and low hysteresis loss and vice versa.
  • ​Hysteresis loss in a magnetic material depends upon the area of the hysteresis loop, frequency of reversed field, and volume of magnetic material.
  • Eddy current loss in the transformer is I2R loss present in the core due to the production of eddy current.
  • At a constant (V/f) ratio, eddy current losses are directly proportional to the square of the frequency.
  • Hysteresis loss in a transformer varies as (Bmax = maximum flux density) Bmax1.6.


For More Transformer MCQs (Set of 400 Most Asked MCQs)



For More Transmission & Distribution MCQS


For More Switchgear and Protection MCQS
Previous Post Next Post