Which of the following amplifier circuit using junction transistor has the best gain?

Related Mcqs:

1. An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is___________?

   A. 1/11KΩ B. 1/5KΩ C. 5KΩ D. 11KΩ...

2. Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?

   A. 49dB B. 51dB C. 98dB D. 102dB...

3. Generally, the gain of a transistor amplifier falls at high frequencies due to the___________?

   A. Internal Capacitance of the device B. Coupling capacitor at the input C. Skin effect D. Coupling capacitor at the output...

4. An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?

   A. 795mV B. 395mV C. 795 mV D. 39.5mV...

5. A 741-type OP-AMP has a gain-bandwidth product of 1MHz. A non-inverting amplifier using this op-amp & having a voltage gain of 20db will exhibit -3db bandwidth of__________?

   A. 50 KHz B. 100KHz C. 1000/17 KHz D. 1000/7.07 KHz...

6. In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db &2db respectively, then its common mode rejection ratio is__________?

   A. 23dB B. 25dB C. 46dB D. 50dB...

7. A differential amplifier has a differential gain of 20,000 . CMRR=80 dB. The common mode gain is given by________?

   A. 2 B. 1 C. 1/2 D. 0...

8. In deriving ac equivalent circuit for an amplifier circuit, we short circuit___________?

   A. all resistors B. all transistors C. all inductors D. all capacitors...

9. The early effect in a bipolar junction transistor is caused by_______________?

   A. fast turn-on B. fast turn-off C. large collector-base reverse bias D. large emitter-base forward bias...

10. Most of the linear ICs are based on the two-transistor differential amplifier because of its___________?

    A. input voltage dependent linear transfer characteristic B. high voltage gain C. high input resistance D. high CMRR...