BASIC ELECTRONICS 2nd Semester Exam
ECE/CSE/IT/MECHATRONIC/0190/May’17

 Basic Electronics PSBTE Diploma Solved Paper May 2017                                                SECTION-A

Q1. Do as directed.                                                                                                                      15×1=15

  1. N-type semiconductors are formed by adding Pentavalent impurity to a pure Semiconductor.

  2. In Intrinsic semiconductors number of electrons are Equal to number of  Protons.

  3. Conduction in P-type semiconductor is due to movement of Holes .  

  4. The value of knee voltage for silicon diode is 0.7 V

  5. A Photodiode is optimized for its sensitivity to 

  6. Zener diode is made to operate in Zener Breakdown Region.

  7. A transistor contains Two PN Junction .

  8. The emitter of a transistor is Highly doped. 

  9. The value of collector current of a transistor is Always Less than to emitter Current.

  10. In transistor, leakage current mainly depends on Temperature.

  11. The ideal value of stability factor is 1 .

  12. The gain stability of an amplifier circuit can be improved by using  Negative Feedback .

  13. For a transistor to work as an amplifier, its operating point should lie in Active Region.

  14. FET is a Three terminal semiconductor.

  15. MOSFET stands for Metal  Oxide Filed Effect Transister .

              SECTION-B

Q2. Attempt any five questions.                                                                    5×6=30

  1. How N-type semiconductor is formed?

  2. What are intrinsic and extrinsic semiconductors?

  3. Write a note on PN Junction ?

  4. What is Zener diode? Draw its symbol and explain its Working ?

  5. What is Transistor? Draw and explain PNP

  6. Differentiate between FET and

  7. What do you mean by thermal runaway?

     SECTION-C

Q3. Attempt any three questions.                                                       3×10=30

  1. What are needs of filter? Explain π (Pi) filter in detail.

  2. Derive an expression for amplification factor (β) of common emitter configuration.

  3. Explain the divider method of biasing for transistor (CE).

  4. What is CMOS? Explain its advantages and application.

  5. Explain the concept of bipolar transistor and draw symbol of NPN and PNP transistors.

BASIC ELectronics be may 2018 DIPLOMA PAPER SOLUTION

BASIC ELECTRONICS DIPLOMA MAY 2018 PAPER

Categories