Electrostatics Electrical Engineering MCQ - Set 03 - ObjectiveBooks

Practice Test: Question Set - 03

1. For which of the following parameter variation, the capacitance of the capacitor remains unaffected?
(A) Distance between plates
(B) Area of the plates
(C) Nature of dielectric
(D) Thickness of the plates

2. In a capacitive circuit
(A) A steady value of applied voltage causes discharge
(B) An increase in applied voltage makes a capacitor charge
(C) Decrease in applied voltage makes a capacitor charge
(D) None of the above

3. The capacitor preferred for high frequency circuits is
(A) Air capacitor
(B) Mica capacitor
(C) Electrolytic capacitor
(D) None of the above

4. Which of the following capacitors is marked for polarity?
(A) Air
(B) Paper
(C) Mica
(D) Electrolytic

5. Capacitors are used for audio frequency and radio frequency coupling and tuning.
(A) Air
(B) Mica
(C) Plastic film
(D) Ceramic

6. At a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
(A) Electric intensity
(B) Magnetic flux density
(C) Electric flux
(D) None of the above

7. 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.
(A) 37, initial
(B) 62, initial
(C) 62, final
(D) 37, final

8. An uncharged conductor is placed near a charged conductor, then
(A) The uncharged conductor gets charged by conduction
(B) The uncharged conductor gets charged by induction and then attracted towards the charging body
(C) The uncharged conductor is attracted first and then charged by induction
(D) It remains as such

9. An electrolytic capacitor is generally made to provide
(A) Low capacitance
(B) Fixed capacitance
(C) Variable capacitance
(D) Large value of capacitance

10. A field line and an equipotential surface are
(A) Always parallel
(B) Always at 90°
(C) Inclined at any angle 0
(D) None of the above

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