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explain extrinsic semiconductorextrinsic semiconductor an intrinsic semiconductor is able to conduct some current even at room temperature but as
explain intrinsic semiconductorintrinsic semiconductor an extremely pure semiconductor is termed as intrinsic semiconductor but at absolute zero
explain ferrimagnetic magnetic materialsferrimagnetic materials in such materials unequal magnetic dipoles are lined up anti-parallel to each other
explain antiferromagnetism magnetic materialsantiferromagnetism magnetic dipoles are aligned anti-parallel to each other antiferromagnetic type
explain ferrites and its uses in high frequency devicesa group of magnetic alloys show the property of magnetisation that change with percentage of
explain the effect of impurity on the conductivity of a semiconductorto form a semi-conductor conductive a small amount of appropriate impurity is
explain hall effecthall effect if a current carrying conductor is placed in a magnetic field a voltage is produced that acts in the perpendicular
explain ionic polarisation ionic polarisation it takes account of the fact that while some of the atoms in a molecule contain an excess positive or
give some applications of nichromenichrome is an alloy of iron chromium nickel and manganesethis is used for electric iron for making heating
give some applications of manganinmanganin is alloy of nickel copper and manganesethis is used shunts in measuring instruments for making their coils
give some applications of german silvergerman silver is an alloy of zinc nickel and coppergerman silver is used in electrical measuring
give some applications of constantanconstantan is an alloy of nickel and copperit is used in thermocouples motor starters and precision
give the applications of pvc pvc- it is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at
give the properties of pvcpvc- it is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at
explain the phenomenon of breakdown in dielectric materialsbreakdown in dielectric materials this electric strength at breakdown is explained as the
give the applications of steelsteel it contains iron with a small percentage of carbon added to this iron itself is not extremely strong but while
give the applications of carbon carbon these materials used in the field of electrical engineering are manufactured from graphite and the other forms
explain the effect of temperature on electrical conductivity of metalsas the temperature is increased there is a greater thermal motion of atoms
define temperature coefficient of resistancetemperature coefficient of resistance is explained as the change in resistance of a material per ohm per
explain the effect of temperature on the resistivity of conducting materialsthe resistance of most metals rises with rise of temperature whereas that
what is resistivity resistivity of a material may be explained as the resistance of the material having unit length and also unit cross sectional
a 20kw 220v shunt generator has armature resistance of 007 and a shunt field resisitance 900 ohm find field
all semiconductors in their last orbit havea 8 electrons b 2 electronsc 4 electronsd 6 electronsans all semiconductors in
large scale integration chips have betweena less than 10 components b 10 and 100 componentsc 100 and 1000
thermocouples are used for the measurement ofa