Q.1
Dielectric strength of a material depends on
Q.2
A region around a stationary electric charge has
Q.3
A gang condenser is a
Q.4
When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will
Q.5
Which of the following capacitors will have the least value of breakdown voltage ?
Q.6
Which of the following capacitors can be used for temperature compensation ?
Q.7
For closer tolerances which of the following capacitors is usually preferred ?
Q.8
Dielectric strength of mica is
Q.9
Paper capacitors usually have a tolerance of
Q.10
A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be
Q.11
Permittivity is expressed in
Q.12
When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of
Q.13
Which of the following capacitors will have the least variation?
Q.14
The capacity of capacitor bank used in power factor correction is expressed in terms of
Q.15
capacitors are used in transistor circuits.
Q.16
The number of Faraday tubes of flux passing through a surface in an electric field is called
Q.17
The value of E within the field due to a point charge can be found with the help of
Q.18
In a cable capacitor, voltage gradient is maximum at the surface of the
Q.19
Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them
Q.20
The unit of dielectric strength is given by
Q.21
Dielectric constant for mica is nearly
Q.22
A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
Q.23
An uncharged conductor is placed near a charged conductor, then
Q.24
When the dielectric is homogeneous,the potential gradient is
Q.25
A field line and an equipotential surface are
Q.26
Dielectric strength of a medium is usually expressed in
Q.27
The units of capacitance are
Q.28
This mention statement is associated with "The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface".
Q.29
Capacitance increases with
Q.30
If the sheet of a bakelite is inserted between the plates of an air capacitor, the capacitance will
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