capacitors can be used only for D.C ?

Related Mcqs:

1. If three 15 uF capacitors are connected in series, the net capacitance is

   A. 5 uF
   B. 30 uF
   C. 45 uF
   D. 50 uF

2. If three 10 uF capacitors are connected in parallel, the net cararitance is___________?

   A. 20 uF
   B. 30 uE
   C. 40 uF
   D. 50 uF

3. Which of the following capacitors will have the least variation ____________?

   A. Paper capacitor
   B. Ceramic capacitor
   C. Silver plated mica capacitor
   D. None of the above

4. Which of the following capacitors has relatively shorter shelf life____________?

   A. Mica capacitor
   B. Electrolytic capacitor
   C. Ceramic capacitor
   D. Paper capacitor

5. capacitors are used for audio frequency and radio frequency coupling and tuning ?

   A. Air
   B. Mica
   C. Plastic film
   D. Ceramic

6. Out of the following capacitors of identical rating which one will have the smallest dimensions ___________ ?

   A. Aluminium foil capacitor
   B. Mica capacitor
   C. Ceramic capacitor
   D. Paper capacitor

7. Mica capacitors are characterized by all of the following except___________?

   A. stable operation
   B. accurate value
   C. low leakage reactance
   D. low losses

8. capacitors are mainly used for radio frequency tuning?

   A. Paper
   B. Air
   C. Mica
   D. Electrolytic

9. For closer tolerances which of the following capacitors is usually preferred ?

   A. Paper capacitor
   B. Mica capacitor
   C. Ceramic disc capacitor
   D. None of the above

10. Which of the following capacitors is marked for polarity ?

    A. Air
    B. Paper
    C. Mica
    D. Electrolytic