SSC JE Electrical Engineering 29th Jan 2018 Shift-1

The S.I unit of Intensity of magnetization is _______ ?

Which one of the following material does not have a constant relative permeability?

Which one of the following is the reciprocal of magnetic permeability?

The mathematical expression for magnetic permeability is _____ ?

What will be the magnetic susceptibility of material if the magnetic field strength of the material is 1200 A/m and the intensity of magnetization is 0.084 A/m?

Determine the pole strength of a magnet (in Wb) when the intensity of  magnetization is 10 $$Wb-m^{-2}$$ and the pole area of the magnet is 8 $$m^{2}$$.

Determine the value of current (in A) in a coil, if it has 60 numbers of turns and produces a mmf of 30 Amp-turns.

What will be the magnetic susceptibility of a material kept in free space if the field strength of the material is $$0.4 \times 10^{7} A-m^{-1}$$ and the flux density of the material is 12 T?

A coil having area of 300 $$cm^{2}$$ and 120 turns is removed from a 60 T magnetic field acting normally in 2 seconds. What is the magnitude of the induced EMF (in V)in the coil?

What will be the value of critical current (in A) through a wire that has a diameter of 4 mm at 10 K? If the critical temperature of the material is 20 K and the magnetic field strength is $$2\times10^{3}A-m^{-1}$$