Transformer coupling is generally employed when load resistance is______________?

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. ________________ coupling is generally employed in power amplifiers?

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

3. 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

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

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

5. In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of _____________________?

   A. RC + RL
   B. RC || RL
   C. RL
   D. RC

6. If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is____________________?

   A. RL + RC
   B. RC || RL
   C. RL – RC
   D. RC

7. The most costly coupling is _______________ coupling?

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

8. Transformer coupling is used for__________amplification?

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

9. 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

10. The frequency response of transformer coupling is___________?

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