problem1:

a) Describe the effect of negative feedback on the closed loop gain of an Op-Amp.
b) Draw the circuit diagram of a Wien bridge oscillator and get an expression for frequency of oscillations.

problem 2:

a) Draw the circuit diagram for an IC regulated power supply and describes its operational features.
b) Define the terms CMRR and Slew rate of an Op Amp? Give the ideal values for them.

problem 3:

a) Draw the circuit diagram of a Foster-Seeley discriminator and describe its working.
b) Draw the diagram for AM detector and describes its functioning.

problem 4:

a) describe the functioning and applications of the microwave resonator.
b) Describe TR waves in the rectangular guides.

problem 5:

a) Draw the circuit of a decoder and describe its functioning.
b) Describe how A/D conversion is accomplished.

problem 6:

a) Give the truth tables of all kinds of Flip-flops. How race around problem is overcome in Master/Slave JK Flip-flop?
b) Describe the working of an asynchronous decade counter with a proper circuit diagram.

problem 7:

a) Draw the architectural diagram of µP 8085 and describe its features.
b) What are various data transformations in 8085? Describe each with exs.

problem 8:

a) Describe 8086 assembler dependent instructions.
b) prepare an assembly language program to describe looping-counters.

problem 9: Answer any two of the given:

a) Magnetron.
b) Phase shift oscillator.
c) Stack and Subroutine.
d) Class B Pushpull power amplifiers.