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

Related Mcqs:

1. 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

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. 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

4. 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

5. In transistor amplifiers, we use_____________transformer for impedance matching?

   A. Step up
   B. Step down
   C. Same turn ratio
   None of the above

6. 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

7. In order to get more voltage gain from a transistor amplifier, the transistor used should have_________________?

   A. Thin base
   B. Thin collector
   C. Wide emitter
   D. None of the above

8. For faithful amplification by a transistor circuit, the value of VCE should______________for silicon transistor?

   A. Not fall below 1 V
   B. Be zero
   C. Be 0.2 V
   D. None of the above

9. 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

10. If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least___________________?

    A. 5 W
    B. 33 W
    C. 75 W
    D. 1 W