Related Questions

Paramagnetic materials have relative permeability
A slightly less than unity
B equal to unity
C slightly more than unity
D equal to that ferromagnetic mate rials
Substances which have permeability less than the permeability of free space are known as
A Ferromagnetic
B Paramagnetic
C Diamagnetic
D Bipolar
Relative permeability of vacuum is
A 1
B 1 H/m
C $$4\pi \times {10^{ - 7}}$$
D $$\frac{1}{4}$$
Superconducting metal in super conducting state has relative permeability of
A Zero
B One
C Negative
D More than one
The relative permeability of a ferromagnetic material is
A Less than one
B More than one
C More than 10
D More than 100 or 1000
The relative permeability is less than unity is case of
A ferromagnetic materials
B ferrites
C non-ferrous materials
D diamagnetic materials
The unit of relative permeability is
A henry/metre
B henry
C henry/sq. m
D it is dimensionless
Which one of the following kinds of materials has the lowest permeability?
A A diamagnetic material
B A paramagnetic material
C A feiTomagnetic material
D All of the above
E None of the above
Which one of the following kinds of materials has the highest permeability?
A A diamagnetic material
B A ferromagnetic material
C A paramagnetic material
D All of the above
E None of the above
Out of the following, the materials having maximum magnetic permeability is
A Silicon steel (Si = 4%)
B Cast iron
C Wrought iron
D Mild steel

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