Q.1
Mica capacitors are characterised by all of the following except
Q.2
"The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed".
The above statement is associated with
Q.3
“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”.
The above statement is associated with
Q.4
Which is the most superior dielectric out of the following ?
Q.5
Which capacitor will be physically smaller for the same ratings ?
Q.6
The value of dielectric constant for vacuum is taken as
Q.7
Which of the following expression is correct for electric field strength ?
Q.8
A dielectric material must be
Q.9
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is
Q.10
Electric intensity at any point in an electric field is equal to the at that point.
Q.11
Which of the following statements is incorrect ?
Q.12
For a good 0.05 uF capacitor ohmmeter reading should
Q.13
Paper condenser is
Q.14
The direction of electric field due +0 positive charge is .
Q.15
The capacitance of a capacitor is not affected by
Q.16
Which of the following capacitors has relatively shorter shelf life ?
Q.17
The ohmmeter reading for a short circuited capacitor is
Q.18
For which of the following parameter variation, the capacitance of the capacitor remains unaffected ?
Q.19
The property of a capacitor to store electricity is called its
Q.20
A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is
Q.21
The dielectric constant (relative permittivity) of glass is given by
Q.22
The total deficiency or excess of electrons in a body is known as
Q.23
The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be
Q.24
Which of the following is not a vector ?
Q.25
The unit of capacitance is
Q.26
The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,
Q.27
Which of the following capacitor is preferred in case of single phase motor ?
Q.28
In the case of a lossy capacitor, its series equivalent resistance value will be
Q.29
The capacitor preferred for high frequency circuits is
Q.30
1 volt/meter is same as
0 h : 0 m : 1 s