Q.1
The structure sensitive property of a super conductor is
Q.2
Spark plug makes use of which of the following materials for insulation ?
Q.3
The kinetic energy of a bounded electron is
Q.4
Super conductivity can be destroyed by
Q.5
The conductivity of a conductor can be increased by
Q.6
Due to which of the following factors the brush wear rate is altered?
Q.7
Which of the following affect greatly the resistivity of electrical conductors?
Q.8
Selenium is _____ semiconductor.
Q.9
Constantan contains
Q.10
An H.R.C. fuse is
Q.11
Which of the following materials is used for making coils of standard resistances ?
Q.12
Mercury as an electric contact material is
Q.13
________ has the best damping properties.
Q.14
On which of the following factors does the resistivity of a material depend ?
Q.15
Piezoelectric materials serve as a source of ________ .
Q.16
The minority carrier concentration is largely a function of
Q.17
The tiny block formed by the arrangement of a small group of atoms is called the
Q.18
The number of atoms per unit cell in B.C.C. structure is
Q.19
Which of the following variety of copper has the best conductivity ?
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