EDC

 

UNIT  3

1) Write shockley’s equation for JFET and hence sketch the transfer curve

defined by IDSS = 12 mA and VP = -6 V.

2)Define and explain the parameters trans-conductance gm. Drain resistance rd

and amplification factor μ of a JFET. Establish a relation between them.

3) Discuss the operation of enhancement MOSFET at different regions with

suitable figures

4) Explain drain-source characteristics and transfer characteristics of JFET.

5) Explain the Vds/Ids characteristics and operation of depletion type MOSFET.

With suitable diagram.

UNIT  4

1)Draw the circuit diagram of fixed bias and derive the expression for Stability

factor for it

2) Explain the different methods of FET bias and how to stabilization for it

3)  Explain about diode compensation for VBE and ICO.

4) Explain how the self bias establishes the stable operating point.

5) What is meant by transistor biasing? Why it is needed? Explain.

 

6) Define thermal runaway and thermal stability

7) Explain the collector to base bias method along with circuit diagram and derive

the stability factor for it

8) Explain any two bias compensation techniques.

9)Explain Operating Point, AC load Line Analysis and DC load Line Analysis.?

10)Explain about Bias Compensation Techniques?

 

UNIT  6

1) Draw the h-parameters equivalent circuit for a common emitter amplifier and

derive the Expression for Ai ,Zi, Av,Yo.

2) Compare the performance of BJT as an amplifier in CE, CB, CC configuration

3) Derive the expressions for Z i, Zo and Av for common Source J-FET amplifier

4) Draw the hybrid parameter equivalent circuit for an NPN common

Emitter transistor and explain.

5) Explain in detail about the h-parameters using a two port network model.

6) Explain about simplified common emitter hybrid model and derive the

expressions for current gain, input impedance, voltage gain and output

impedance.

7) Derive the general expressions for current gain, input impedance, voltage gain

and output impedance of transistor amplifier using h-parameters.

8) Explain FET  generalized analysis of small signal model

9)Explain Small signal Analysis for Common Source Amplifier.?

10) Compare FET Amplifiers?