Related Questions

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
Substances which have permeability less than the permeability of free space are known as
A Ferromagnetic
B Paramagnetic
C Diamagnetic
D Bipolar
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
The relative permeability of materials is not constant.
A diamagnetic
B paramagnetic
C ferromagnetic
D insulating
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
The average marks of a student in 10 parers are 80. If the highest and the lowest scores are not considered, the average is 81 . If his highest score is 92. find the lowest.
A 55
B 60
C 62
D None of these
Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
A Nichrome
B Constantan
C Kanthal
D Molybdenum
Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
A Admirability brass
B Stainless steel
C Aluminium brass
D Titanium
Superconducting metal in super conducting state has relative permeability of
A Zero
B One
C Negative
D More than one
The cold rolled grain oriented steel has ______ permeability in the direction of the grain orientation.
A minimum
B maximum
C nil
D none of the above

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