Basic electronics model paper | Awkum or Gpgc mardan

Semester: 2nd, BS (computer science)

Time All0wed:2h.30m                                                                                                 Marks: 60

Basic Electronics

SECTION A

Note: Attempt all questions: 

Q.No.1: Fill in the blanks from the multiple choices given at the end of each blank.     (6)

1: Unit of electronic field intensity is………….

2: Barrier potential of silicon diode is…………...

3: …………is the conversion of ac into dc.

4: ……… is the addition of impurity.

5: Series circuit is called………while parallel circuit is called…………

6: If the input frequency of a half wave rectifiers 10 Hz the output frequency will be………….

Q.No.2: Give short answers to the following questions.                (14)

                

>What is electric charge? Give its characteristics.

>Define Eddy current?

>State integrated circuit? Give example.

>What is resonance frequency? Derive an expression.

>State Lenz law and ampere law.

>What is band theory?

>Commercially why we prefer over germanium?

SECTION B                                       (40)

Q.NO.3    State Norton and thevenin theorem. Write down the steps how to 

                 Nortonize and thevenize a given complex network.

Q.NO.4   What are transistors? How can we use transistors as an amplifier?

Q.NO.5   What is rectifier? Explain its different types. Also draw label 

                 diagram.

Q.NO.6   State semiconductor .Explain its different types.

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