Q.1
The bridge used for the measurement of the value of the capacitance is
Q.2
is that property of a capacitor which delays any change of voltage across it.
Q.3
Which of the following capacitors preferred for high frequency circuits ?
Q.4
The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
Q.5
The lines of force due to charged particles are
Q.6
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
Q.7
A capacitance is a circuit component that opposes the change in circuit
Q.8
In order to remove static electricity from machinery
Q.9
Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?
Q.10
Which of the following material has least value of dielectric constant ?
Q.11
The absolute permittivity of free space is given by
Q.12
The relative permittivity of free space is given by
Q.13
To prevent the generation of static charges on rubber or flat leather
Q.14
A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be
Q.15
One volt is the same as
Q.16
_______ field is associated with the capacitor.
Q.17
If three 15 uF capacitors are connected in series, the net capacitance is
Q.18
Which of the following materials has the highest value of dielectric constant?
Q.19
at a point is equal to the negative potential gradient at that point.
Q.20
The electric field at a point situated at a distance d from straight charged conductor is
Q.21
capacitors are used for audio frequency and radio frequency coupling and tuning.
Q.22
Electric field intensity is a quantity
Q.23
The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.
Q.24
The potential gradient across the material of low permittivity is than across the material of high permittivity.
Q.25
A condenser suitable for D.C. only is
Q.26
The dissipation factor of a good dielectric is of the order of
Q.27
A charge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 103 N, is known as
Q.28
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
Q.29
If three 10 uF capacitors are connected in parallel, the net cararitance is
Q.30
capacitors can be used only for D.C.
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