Special-Purpose Op-Amp Circuits 2 Questions and Answers
Operational amplifiers (Op-Amps) are the building blocks of analog electronics, and understanding special-purpose op-amp circuits is essential for students of Electronics and Communication Engineering. This resource includes special-purpose op-amp circuits questions with answers designed for GATE, BEL, and DRDO aspirants. These aptitude questions and answers with explanations cover applications such as integrators, differentiators, voltage followers, and active filters. Detailed explanations help students link theory with real-world implementation and strengthen their preparation for both academic and competitive technical exams.
Special-Purpose Op-Amp Circuits 2
Showing 10 of
30 questions
21. An OTA has
- a bias-current input terminal.
- high output impedance.
- no fixed open-loop voltage gain.
- all of the above
22. One of the key characteristics of an instrumentation amplifier is high input impedance.
- TRUE
- FALSE
23. Instrumentation amplifiers are commonly used in environments with high common-mode noise.
- TRUE
- FALSE
24. A constant-current source delivers a load current that remains constant only when the load resistance remains constant.
- TRUE
- FALSE
26. One of the principal areas of application for an isolation amplifier is power plant instrumentation.
- TRUE
- FALSE
27. An isolation amplifier provides ac isolation between input and output.
- TRUE
- FALSE
28. The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.
- TRUE
- FALSE
29. In an isolation amplifier, the third op-amp is used as a unity-gain differential amplifier.
- TRUE
- FALSE
30. To construct an instrumentation amplifier, two op-amps and seven resistors are needed.
- TRUE
- FALSE