Which of the following is a vector quantity ?

A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential

A material which is slightly repelled by a magnetic field is known as_____________?

A. Ferromagnetic material
B. Diamagnetic material
C. Paramagnetic material
D. Conducting material

Fleming’s left hand rule is used to find_________________?

A. Direction of magnetic field due to current carrying conductor
B. Direction of flux in a solenoid
C. Direction of force on a current carrying conductor in a magnetic field
D. Polarity of a magnetic pole

Magnetising steel is normals difficult because____________?

A. It corrodes easily
B. It has high permeability
C. It has high specific gravity
D. It has low permeability

When an iron piece is placed in a magnetic field_____________?

A. The magnetic lines of force will bend away from their usual paths in order to go away from the piece
B. The magnetic lines of force will bend away from their usual paths in order to pass through the piece
C. The magnetic field will not be affected
D. The iron piece will break

The ratio of intensity of magnetisation to the magnetisation force is known as_____________?

A. Flux density
B. Susceptibility
C. Relative permeability
D. None of the above

Materials subjected to rapid reversal of magnetism should have______________?

A. Large area oib-h loop
B. High permeability and low hysteresis loss
C. High co-ercivity and high retentivity
D. High co-ercivity and low density

The unit of relative permeability is_____________?

A. Henry/metre
B. Henry
C. Henry/sq. m
D. It is dimensionless

Indicate which of the following material does not retain magnetism permanently

A. Soft iron
B. Stainless steel
C. Hardened steel
D. None of the above

The force between two long parallel conductors is inversely proportional to_____________?

A. Radius of conductors
B. Current in one conductor
C. Product of current in two conductors
D. Distance between the conductors