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Electrical Engineering Objective Questions { Electrostatics }



92. 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
A. Gauss's law
B. Kirchhoff's law
C. Faraday's law
D. Lenz's law

93. The potential of the sphere is given by
A. uniform
B. non-uniform
C. zero
D. any of the above

94. Dielectric strength of mica is
A. 10 to 20 kV/mm
B. 30 to 50 kV/mm
C. 50 to 200 kV/mm
D. 300 to 500 kV/mm

95. The dielectric constant (relative permittty) of glass is given by
A. 0.1 to 0.4
B. 0.5 to 1.0
C.2.0 to 4.0
D. 5 to 100

96. The area of plates of the parallel plate capacitor, to obtain capacity of 0.3 x 10 ttF if they are separated by a distance of 10 min and a dielectric between them of permittivity = 2.5, will be
A. 0.1 m2
B.0.125 m2
C. 0.135m2
D. 0.235 m2

97. If three capacitors C1, C2 and C3 of values of 1 tif, 2 g and 4 ItF respectively are in series and connected across a potential of 230 V, then charge on each capacitor is would move if free to do so
A. positive
B. negative
C. both of the above
D. none of the above

98. The inverse of capacitance is called
A. reluctance
B. conductance
C. susceptance
D. elastance

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