I am very glad to present this Online Reference Book on 'Electronics Devices & Circuits' for the students of Second Year Degree Course in Engineering of Savitribai Phule Pune University, Pune. As per the policy of the University, Engineering Syllabi is based on revised 2012 pattern and an Online System of Examination (50 Marks) for FE and SE has been introduced.

As per new norms of University online Examination (50 Marks) is only on first four units. So I have given large number of Multiple Choice Questions with explanation only on four units.