Differential amplifiers are used in______________?

Related Mcqs:

1. A differential amplifier has a differential gain of 20,000. CMMR=80dB. The common mode gain is given by_______________?

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

2. 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...

3. A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?

   A. CMMR B. Bandwidth C. Slew rate D. Open-loop gain...

4. For an op-amp having differential gain Av and common-mode gain Ac the CMRR is given by___________?

   A. Av + Ac B. Av / Ac C. 1 + Av / AC. D. Ac / Av...

5. The ideal OP-AMP has the following characteristics

   A. Ri=∞ ,A=∞ ,R0=0 B. Ri=0 ,A=∞ ,R0=0 C. Ri=∞ ,A=∞ ,R0=∞ D. Ri=0 ,A=∞ ,R0=∞...

6. An opamp has a slew rate of 5V/ S. the largest sine wave o/p voltage possible at a frequency of 1MHz is____________?

   A. 10 V B. 5 V C. 5V D. 5/2 V...

7. An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed_____________?

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

8. The output voltage Vo of the above circuit is____________?

   A. -6V B. -5V C. -1.2V D. -0.2V...

9. A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?

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

10. An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is_______________?

    A. 10 volts B. 5 volts C. 5/ volts D. 5/2 volts...