Quiz Bank Quiz Bank June 18, 2015 Auther Quiz Bank Amplifier Quiz Op-Amp Quiz 1. Op-amp block schematic is referred as Two stage architecture Three stage architecture Four stage architecture Five stage architecture 2. The second stage in Op-Amp block Schematic is DuaI input Balanced Output Single Input Unbalanced Output Dual Input Unbalanced Output Single Input Balanced Output 3. In Opamp the last stage is emitter follower which provides Low O/P resistance and high voltage gain Low O/P resistance and low voltage gain Low O/P resistance and high current gain Low O/P resistance and low current gain 4. Op-amp amplifies ac signals only dc signals only both ac and dc signal none of these 5. In Op-amp the last stage is emitter follower which provides Low O/P resistance and high current gain Low O/P resistance and high voltage gain Low O/P resistance and low voltage gain Low O/P resistance and low current gain 6. With suitable feed back op-amp can be used as Ac and Dc signal amplification Active filter Oscillator All above 7. The opamp can be used over the frequency range 10 Hz to 10KHz 0 Hz to 1MHz 20Hz to 20 KHz 0Hz to 2 MHz 8. The CMRR of UA741 is 80 db 90 db 100db 110db 9. The slew rate ofUA 741 is a) 0.5 V/S b) 0.6V/µS c) 0.5 V/µS d) 0.6V/S 10. The output resistance offered by UA 741C is a) 100 ohm b) 80 ohm c) 75 ohm d) 70 ohm Loading …