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Council for Technical Education and Vocational Training{{CTEVT}} Office of the Controller of Examinations
Sanothimi, Bhaktapur
Regular/ Back Exam-2079, Bhadra/Ashwin
Full Marks: 80
Pass Marks: 32
Program: Diploma in Electrical & Electronics / Electrical Engg.
Year/Part: II/I (2013, 2014)
Subject: Basic Electronics
Time: 3 hrs.
Candidates are required to give their answers in their own words as far as practicable.The figures in the margin indicate full marks.
Attempt Any Eight questions.
1. Define Electronics Engineering? Explain the application and importance of electronics in modern society. [2 + 8]
2. Find the resistance value of the following using colour code.! [5 * 2 = 10]
a) Grey, Blue, Gold, Gold
b) Yellow, Violet, Brown, Silver
c) Brown, Black, Orange, Gold
d) Red, Violet, Red, Gold
e) Green, Brown, Black, Red, Silver
3. Define capacitance. Find the total capacitance (Ceq) of the circuit shown below. All capacitance are in µF. [2 + 8]
4. Define semiconductor. Explain N-type semiconductor and P-type semiconductor with doping diagram. {2+8}
5. What is PN junction Diode? Explain Zener diode as a voltage Regulator. [2 + 8]
6. What is microphone? Enlist different types of microphone and explain one of them. [2+8]
7. What is BJT? Explain about input and output characteristics of PNP transistor. [2+8]
8. Why CE configuration is most popular in amplifier circuits? Explain input and output characteristics of common emitter configuration in detail. [2+8]
9. Explain the construction and V-I characteristics of an SCR. [4+6]
10. Write short notes on: (Any Two) [5*2=10]
a) MOSFET
b) Varactor diode
c) Class B Amplifier
d) Magnetic Relays
Good Luck!
