In transistor amplifiers, we use_____________transformer for impedance matching?

Related Mcqs:

1. Power amplifiers handle ______________ signals compare to voltage amplifiers?

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

2. The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?

   A. The same as B. Less than C. More than D. None of the above...

3. The disadvantage of impedance matching is that it _______________?

   A. Gives distorted output B. Gives low power output C. Requires a transformer D. None of the above...

4. CC configuration is used for impedance matching because its ________________?

   A. Input impedance is very high B. Input impedance is low C. Output impedance is very low D. None of the above...

5. In transistor amplifiers, we generally use______________ capacitors?

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

6. What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?

   A. 2 B. 7 C. 3 D. None of the above...

7. If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ____________?

   A. 20 kΩ B. 2 kΩ C. 10 kΩ D. 5 kΩ...

8. It is generally desired that a transistor should have_____________________ input impedance?

   A. Low B. Very low C. High D. Very high...

9. A transistor amplifier has high output impedance because ______________?

   A. Emitter is heavily doped B. Collector has reverse bias C. Collector is wider than emitter or base D. None of the above...

10. For faithful amplification by a transistor circuit, the value of VBE should_____________for a silicon transistor?

    A. Be zero B. Be 0.01 V C. Not fall below 0.7 V D. Be between 0 V and 0.1 V...