An AF amplifier is shielded to ________________?

Related Mcqs:

1. A 2-transistor class B power amplifier is commonly called ______________ amplifier?

   A. Dual
   B. Push-pull
   C. Symmetrical
   D. Differential

2. The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?

   A. More than
   B. The same as
   C. Less than
   D. Data insufficient

3. In a transistor amplifier circuit VCE = VCB +________________?

   A. VBE
   B. 2VBE
   C. 5 VBE
   D. None of the above

4. An amplifier has a power gain of 100. Its db gain is ________________?

   A. 10 db
   B. 20 db
   C. 40 db
   D. None of the above

5. The output stage of a multistage amplifier usually employs _________________?

   A. Push-pull amplifier
   B. Preamplifier
   C. Class A power amplifier
   D. None of the above

6. The maximum efficiency of transformer coupled class A power amplifier is _______________?

   A. 30%
   B. 50%
   C. 80%
   D. 45%

7. Class_____________ power amplifier has the highest collector efficiency ?

   A. C
   B. A
   C. B
   D. AB

8. The maximum efficiency of resistance loaded class A power amplifier is _________________?

   A. 5%
   B. 50%
   C. 30%
   D. 25%

9. The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?

   A. 1 W
   B. 2 W
   C. 4 W
   D. None of the above

10. If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?

    A. Amplitude
    B. Intermodulation
    C. Frequency
    D. None of the above