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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