Transformer coupling is used for__________amplification?

Related Mcqs:

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

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

2. 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

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

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

4. The most costly coupling is _______________ coupling?

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

5. 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

6. The frequency response of transformer coupling is___________?

   A. Good
   B. Very good
   C. Excellent
   D. Poor

7. 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

8. Transformer coupling is generally employed when load resistance is______________?

   A. Large
   B. Very large
   C. Small
   D. None of the above

9. Transformer coupling can be used in______________amplifiers?

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

10. The output transformer used in a power amplifier is a _____________ transformer?

    A. 1:1 ratio
    B. Step-up
    C. Step-down
    D. None of the above