capacitors are mainly used for radio frequency tuning?

Related Mcqs:

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

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

2. Which of the following capacitors preferred for high frequency circuits ?

   A. Air capacitor
   B. Electrolytic capacitor
   C. Mica capacitor
   D. none of the above

3. 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

4. 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

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

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

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 used in transistor circuits?

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

9. capacitors can be used only for D.C ?

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

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

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