Page 71 - Semester-IV-Electronics

Model Questions

 What is a an OP-AMP ? Explain its properties and

applications. Draw circuit diagrams of inverting and non-

inverting amplifiers and explain their working.

 What is a differential amplifier ? What is CMRR ? How is

CMRR of a differential amplifier determined ?

 What is a dc level shifter ? Write circuit diagram and its

necessity before every stage of amplifier ?

 Derive expressions for input & output impedances of an OP-

AMP working as inverting & non-inverting amplifier.

 What is input off-set current ? How to minimize it ? Explain.

 Explain working of OP-AMP as an Adder & Subtractor.

 Explain working of OP-AMP as a differentiator & integrator

with circuit diagrams.

71