ELECTRONIC COMPONENTS AND POWER SUPPLIES

 UNIT 1 PASSIVE COMPONENTS SHORT ANSWER QUESTIONS  1)  Define active and passive materials ? 2)  Draw the symbols for R (resistor) , C (capacitor) , I ( inductor ) ? 3)  Define the term resistor & classify resistors ? 4)  Define the term capacitor & classify capacitors ? 5)   Factors that affect the value of a resistance & capacitance ? 6)   Draw the colour code table  ? calculate a resistance  value by using colour Code with an example ? 7)  Compare  carbon and wire wound potentiometers ? 8)  Short notes on thermistor and sensistor ? 9)  Short note on rheostat and give its applications ? 10) Derive temperature co-efficient of resistance ? 11)  Mention the applications of thermistor and sensistor ? 12)  Define the term inductor & classify inductors ? 13)  What is Stray inductance ? 14)  Define the term resistance & capacitance ? 15)  Defin...

 UNIT 2  SWITCHES , CONNECTORS AND RELAYS   SHORT ANSWER QUESTIONS  1) Classify switches according to poles and throws ? 2) Sketch the I.S.I symbols of various switches ? 3) State the need of fuse in electronic equipment ? 4) Explain the necessity of connectors in electronic circuits ? 5) Mention the use of MCB ? 6) Define a relay ? List the specifications and applications of relays ? ESSAY TYPE QUESTIONS  1) Explain the working of general purpose electromagnetic relay ? 2) State the need of fuse in electronic equipment ? Mention different types of fuses ? 3) i)  Explain the necessity of connectors in electronic circuits ?     ii) Types of connectors ?     iii) Short notes on MCB ? draw symbol for MCB ? 4) i)  Classify different relays based on principle of operation, polarization and application?     ii)  List the specifications and applications of relays.?

  UNIT 3  PCB's SHORT ANSWER QUESTIONS  1)   What is meant by PCB ? 2) Classify PCB's and list types of laminates used in PCB's ? 3) Explain the need of PCB in electronic equipment ? 4) List the steps involved in making PCB's ? 5) What is meant by soldering ?  List the soldering methods of PCB's ? 6)  List the steps involved in screen-printing for making PCB's ? 7) Define  Surface mount Technology (SMT) ? ESSAY TYPE QUESTIONS  1) a) What is meant by PCB ?     b) Need for PCB ?     c) Advantages of PCB ?     d) Classification of PCB ? 2) a) Steps involved in preparation of PCB ?     b) Types of lamination's used in PCB ?     c) Short notes on ETCHING & PRINTING ? 3) a) Explain screen printing method ?     b) Short notes on DRILLING & MOUNTING ? 4) a) Define SMT ?     b) Define Soldering ?     c) Materials used in soldering ?     d) ...

UNIT 4 SEMICONDUCTOR PHYSICS SHORT ANSWER QUESTIONS : 1)  Distinguish between intrinsic and extrinsic semiconductors? 2) Energy Band diagrams for conductor ,  Semiconductor , insulator? 3) Compare P-type and N-type semiconductors ? 4) Compare conductors, semiconductors and Insulators ? 5) Short notes on Drift and Diffusion currents ? 6)  Energy Band diagrams intrinsic and extrinsic semiconductors   ? 7) Define doping , forbidden energy gap , Fermi level ? ESSAY TYPE QUESTIONS :  1) a) Distinguish between intrinsic and extrinsic semiconductors?     b)  Compare P-type and N-type semiconductors ?     c) Define energy band ,valance band ,  doping , Drift and Diffusion currents ? 2) a) Energy Band diagrams for conductor ,  Semiconductor , insulator?           b) Short notes on intrinsic and extrinsic semiconductors ? 3) a) Explain the formation of P type and N type semicond...

UNIT 5 SEMICONDUCTOR DIODES SHORT ANSWER QUESTIONS : 1) Specifications of PN diode ? 2) Short notes on PN & zener diode ? 3) VI charactristics of  PN & zener diode ? 4) Applications of  PN & zener diode ? 5) Difference between Zener & Avalanche breakdowns ? 6)  Specifications of  Zener  diode  ? 7) Explain reverse breakdown phenomenon ? ESSAY TYPE QUESTIONS :  1) Formation & working of PN diode ? draw the symbole for PN diode ? 2) Short notes on biasing of PN diode ?Explain  VI charactristics of  PN diode ? 3) Define Zener diode ? Draw the symbole for zener diode ? State the features of zener ? 4) Construction& Working of Zener diode ?  Explain  VI charactristics of  PN diode ?

  UNIT 6 BJT SHORT ANSWER QUESTIONS : 1) Define transistor ? Draw the symbols for NPN,PNP ? 2) Draw the circuits for CE,CB,CC configuration ? 3) Transistor biasing table for configuration ? 4) Short notes on working of PNP,NPN transistors ? 5) Short notes on Transistor as an Amplifier ?  6) Draw the i/p & o/p Characteristics of CE,CB,CC ? 7) Relation between alpha,beta,gama ? 8) Compare CE,CB,CC ? 9) Short notes on Transistor working as switch ? ESSAY TYPE QUESTIONS :  1) Explain the construction & working of PNP & NPN transistors ? 2) Define  alpha,beta,gama ? R elation between alpha,beta,gama ?  3) (a)   Draw the circuits for CE,CB,CC configuration ?     (b)  Draw the i/p & o/p Characteristics of CE,CB,CC ?     (c)  Compare CE,CB,CC ? 4) (a) Working of Transistor as a switch ?     (b) Define active ,saturation &cut-off region ?     (c) What is meant by emitter follower ?

 UNIT 7 FIELD EFFECT TRANSISTOR   SHORT ANSWER QUESTIONS : 1) Classification of FET ? 2) Difference between FET & BJT ? 3) Advantages of FET over BJT ? 4) Draw the symbols for JFET (p-type , n-type) , MOSFET  (p-type , n-type) ? 5) Short notes on working of N channel enhancement MOSFET ? 6)  Short notes on working of N channel depletion MOSFET ? 7) Compare JFET & MOSFET ? 8) Drain characteristics of JFET  (p-type , n-type) ? ESSAY TYPE QUESTIONS : 1) Construction and principle of operation of n channel JFET ? 2) Drain characteristics of JFET (p-type , n-type) ? 3) Define parameters of JFET and obtain the relation between them ? 4) Construction & working of N channel depletion MOSFET ? 5) Draw the drain & transfer characteristics of  N channel depletion MOSFET ?

    UNIT 8  POWER SUPPLIES   SHORT ANSWER QUESTIONS : 1) Define peak inverse voltage & ripple factor ? 2) Draw the circuit diagrams for half wave , full wave and bridge wave rectifier ? 3) Short notes on RPS ? 4) Draw the circuits for filters i)capacitor filter                                                                 ii) LC filter                                                                 iii) CLC filter                                            ...