Electrostatics

31. The total deficiency or excess of electrons in a body is known as

current
voltage
potential gradient
charge

Detailed SolutionThe total deficiency or excess of electrons in a body is known as

32. Paper condenser is

always polarised
usually of fixed value
electrolytic condenser
a variable condenser

Detailed SolutionPaper condenser is

33. The potential gradient across the material of low permittivity is than across the material of high permittivity.

smaller
greater
both (A) and (B)
none of the above

Detailed SolutionThe potential gradient across the material of low permittivity is than across the material of high permittivity.

34. The capacitance of a capacitor is not affected by

distance between plates
area of plates
thickness of plates
all of the above

Detailed SolutionThe capacitance of a capacitor is not affected by

35. The capacity of capacitor bank used in power factor correction is expressed in terms of

kW
kVA
kVAR
volts

Detailed SolutionThe capacity of capacitor bank used in power factor correction is expressed in terms of

36. The direction of electric field due +0 positive charge is .

away from the charge
towards the charge
both (A) and (B)
none of the above

Detailed SolutionThe direction of electric field due +0 positive charge is .

37. The inverse of capacitance is called

reluctance
conductance
susceptance
elastance

Detailed SolutionThe inverse of capacitance is called

38. The lines of force due to charged particles are

always straight
always curved
sometimes curved
none of the above

Detailed SolutionThe lines of force due to charged particles are

39. To prevent the generation of static charges on rubber or flat leather

surface is moistened
conductive dressing is done
oil compound dressing is done
talcum powder is sprayed on the surface

Detailed SolutionTo prevent the generation of static charges on rubber or flat leather

40. Which is the most superior dielectric out of the following ?

Air
Glass
Bakelite
Paper

Detailed SolutionWhich is the most superior dielectric out of the following ?

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