ANALOG ELECTRONICS : Question Bank

ANALOG ELECTRONICS : Question Bank

Draw transistor C-E amplifier circuit. Draw its ac equivalent circuit.

Obtain h-parameter equivalent circuit of C-E configuration. Discuss merits and demerits of h-parameters.

Do the analysis of C-E amplifier circuit and obtain expressions of AV, AI, AVs, AIS, RI, Ro  in terms of h-parameters.

Do the analysis of C-E amplifier circuit with un bypassed  RE.

Do the analysis of C-C amplifier circuit and obtain expressions of AV, AI, AVs, AIS, RI, Ro  in terms of h-parameters.

Explain the need of cascading transistor amplifier. How to select the amplifier for cascaded connection?

What is power amplifier? Give important features of power amplifier circuit.

What is transistor load line? Explain how to obtain it. Define Q- point on the load line.

Compare various transistor amplifier configuration.

Explain operation of class –B  operation using necessary waveforms. Enlist advantages, disadvantages and  applications of  it.

Explain operation of class –AB  operation using necessary waveforms. Enlist advantages, disadvantages and  applications of  it.

Explain working of class B  push-pull amplifier circuit with necessary waveforms.

Explain working of class B  complementary –symmetry  amplifier circuit with necessary waveforms.

What is crossover distortion in class B amplifier circuit ? Give causes and remedies for the same.

Enlist various biasing configurations for JFET. Explain any one of them in detail.

Enlist various biasing configurations for MOSFET. Explain any one of them in detail.

What do you mean by feedback in amplifier circuit? What is positive feedback  and What is negative feedback  ? Give comparison between them.

Explain effect of negative feedback on gain, distortion , stability and band width.

Explain voltage series feedback (series- shunt) feedback with the block diagram.

Explain voltage shunt feedback (shunt- shunt) feedback with the block diagram.

Explain current series feedback (series- series) feedback with the block diagram.

Explain current  series feedback (shunt- series) feedback with the block diagram.

Solve the numericals  from reference books (solved problems).

Draw the substractor circuit using Op-Amp Define Q for filter circuits. Justify that ideally common mode rejection ratio for op-amp is infinite Describe in brief : PSSR , CMRR, Slew rate, offset voltage, offset current, bias current. Draw the Pin diagram of IC-555 Draw the circuit of Op-amp based integrator. Describe the meaning of Cross Over Distortion occurred in amplifier. Define the meaning of virtual ground in Op-amp.

Find the maximum frequency for a sine wave, output voltage of 10V peak with an op-amp whose slew rate is 1V/µS. Derive the equation for non inverting amplifier using OP-AMP . Explain the working of a summing and averaging amplifier when connected in  inverting mode.  For inverting amplifier V1= 1V, V2= 3V, V3= 2V with R1=R2=R3= 2K  and RF= 3K, Determine the output voltage.   Compare: inverting and non inverting amplifier.  Explain in detail voltage follower with its applications. Compare: R-C phase shift and wein bridge oscillator.  Design a R-C phase shift oscillator to produce a sinusoidal output at 1KHZ, using capacitor value 0.01 µF. Write short note on : Integrator. Explain symmetric Square wave generator using op-amp.

Why it is necessary to use an external offset voltage compensating network with practical Opamp circuits? What is an instrumentation amplifier? List applications of instrumentation amplifier. Draw the block schematic of a typical operational amplifier and briefly explain the function of each block. Also give the equivalent circuit of the Opamp.

Determine the output voltage of an op-amp for input voltages of Vi1 = 150 µV, Vi2 = 140 µV. The  amplifier has a differential gain of  Ad  4000  and the value of CMRR is: (a) 100. (b) 105 .

Explain how an OP-AMP works as an averaging amplifier? Explain the effect of negative feedback on frequency response in an OP-AMP. What do you mean by slew rate in an OP-AMP? Also mention about  causes of slew rate  and explain its significance in applications.

Draw and explain OP-AMP as a zero crossing detector. Give suitable example of its practical application. What are the requirements of Instrumentation amplifier for practical purpose? Explain the working of a practical integrator circuit with neat sketch. Also draw output waveforms for sinusoidal and square wave inputs. Describe how an Op-amp may be used as voltage to current converter. State the application of OP-AMP based Wein bridge oscillator. Explain circuit diagram of OP- AMP as a Peak detector.

Explain voltage to current converter with grounded load. Draw the circuit op-amp as differentiator and explain with necessary waveforms.