Practice Test: Question Set - 06
1. If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because
- (A) Varying voltage produces the charging and
discharging currents
- (B) Of high peak value
- (C) Charging current can flow
- (D) Discharge current can flow
2. Which of the following capacitors has relatively shorter shelf life?
- (A) Mica capacitor
- (B) Electrolytic capacitor
- (C) Ceramic capacitor
- (D) Paper capacitor
3. A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be?
- (A) Paper capacitor
- (B) Ceramic capacitor
- (C) Electrolytic capacitor
- (D) Any of the above
4. Dielectric constant for mica is nearly
- (A) 200
- (B) 100
- (C) 3 to 8
- (D) 1 to 2
5. Capacitors are mainly used for radio frequency tuning.
- (A) Paper
- (B) Air
- (C) Mica
- (D) Electrolytic
6. The value of E within the field due to a point charge can be found with the help of
- (A) Faraday's laws
- (B) Kirchhoff s laws
- (C) Coulomb's laws
- (D) None of the above
7. 1 volt/meter is same as
- (A) 1 meter/coulomb
- (B) 1 Newton meter
- (C) 1 Newton/meter
- (D) 1 joule/coulomb
8. Which of the following statements is correct?
- (A) Mica capacitors are available in capacitance
values of 5 to 20 uF
- (B) Air capacitors have a black band to indicate
the outside foil
- (C) Electrolytic capacitors must be connected in
correct polarity
- (D) Ceramic capacitors must be connected in
correct polarity
9. When a dielectric is placed in an electric field the field strength
- (A) Decreases
- (B) Increases
- (C) Reduces to zero
- (D) Remain unchanged
10. Which of the following capacitors can be used for temperature compensation?
- (A) Air capacitor
- (B) Ceramic capacitor
- (C) Paper capacitor
- (D) None of the above
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