The most costly coupling is _______________ coupling?

Related Mcqs:

1. In an RC coupling scheme, the coupling capacitor CC must be large enough______________?

   A. To pass d.c. between the stages
   B. Not to attenuate the low frequencies
   C. To dissipate high power
   D. None of the above

2. In RC coupling, the value of coupling capacitor is about_______________?

   A. 100 pF
   B. 0.1 µF
   C. 0.01 µF
   D. 10 µF

3. Which of the following braking systems on the locomotives is costly ?

   A. Regenerative braking on electric locomotives
   B. Vacuum braking on diesel locomotives
   C. Vacuum braking on steam locomotives
   D. All braking systems are equally costly

4. ________________ coupling is generally employed in power amplifiers?

   A. Transformer
   B. RC
   C. direct
   D. Impedance

5. Transformer coupling can be used in______________amplifiers?

   A. Either power or voltage
   B. Only power
   C. Only voltage
   D. None of the above

6. Power amplifiers generally use transformer coupling because transformer permits______________?

   A. Cooling of the circuit
   B. Impedance matching
   C. Distortionless output
   D. Good frequency response

7. RC coupling is used for_____________amplification?

   A. Voltage
   B. Current
   C. Power
   D. None of the above

8. Transformer coupling provides high efficiency because___________?

   A. Collector voltage is stepped up
   B. resistance is low
   C. collector voltage is stepped down
   D. none of the above

9. RC coupling is generally confined to low power applications because of____________?

   A. Large value of coupling capacitor
   B. Low efficiency
   C. Large number of components
   D. None of the above

10. The purpose of RC or transformer coupling is to_____________?

    A. Block a.c.
    B. Separate bias of one stage from another
    C. Increase thermal stability
    None of the above