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________?

Related Mcqs:

1. 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 [Hint: Slew rate is defined as the max. rate of change of output voltage. Its unit is V/μS.

   A. 10 volts
   B. 5 volts
   C. 5/1 volts
   D. 5/2 volts

2. 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

3. Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in____________?

   A. Only the temperature
   B. only the β of the transistor
   C. Both Temperature & β
   D. None of the above

4. A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ .At the frequency of 4KHZ,the o/p voltage will be___________?

   A. 1 v
   B. 2v
   C. 1.4v
   D. 2.8v

5. 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

6. Class AB operation is often used in power large signal amplifiers in order to_________?

   A. get maximum efficiency
   B. remove even harmonics
   C. overcome a crossover distortion
   D. reducing collector dissipation

7. 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

8. 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

9. 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

10. The cascade amplifier is a multistage configuration of__________?

    A. CC-CB .
    B. CE-CB
    C. CB-CC
    D. CE-CC