Magnetic Circuit Objective Questions and Answers

11.  The unit of magnetic flux is

   A. Henry

   B. Weber

   C. Ampere-turn/weber

   D. Ampere/meter

12.  The unit of reluctance is

   A. Meter/henry

   B. Henry/meter

   C. Henry

   D. 1/henry

13.  Reciprocal of reluctance is

   A. Reluctivity

   B. Permeance

   C. Permiability

   D. Susceptibility

14.  The unit of retentivity is

   A. Weber

   B. Weber/sq. meter

   C. Ampere turn/metre

   D. Ampere turn

15.  Silicon steel is used in electrical machines because it has

   A. Low co-ercivity

   B. Low retentivity

   C. Low hysteresis loss

   D. High co-ercivity

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