Magnetic Circuit Objective Questions and Answers

16.  Conductivity is analogous to

   A. Retentivity

   B. Resistivity

   C. Permeability

   D. Inductance

17.  Conductance is analogous to

   A. Permeance

   B. Reluctance

   C. Flux

   D. Inductance

18.  Material for good magnetic memory should have

   A. Low hysteresis loss

   B. High permeability

   C. Low retentivity

   D. High retentivity

19.  Hard steel is suitable for making permanent magnets because

   A. It has good residual magnetism

   B. Its hysteresis loop has large area

   C. Its mechanical strength is high

   D. Its mechanical strength is low

20.  Permanent magnets are normally made of

   A. Alnico alloys

   B. Aluminium

   C. Cast iron

   D. Wrought iron

< 1 2 3 4