(Paper) Basic Electronics Engineering, May/June-2001 (MG University)

MG University
B. Tech Degree Examination, May/June 2001
First and Second Semester

Basic Electronics Engineering
(Common for all branches)

Time: Three Hours                                                                                                                                                            Maximum: 100 Marks
Answer all questions.Each question carries 4 marks each
Part A



1

Discuss how a high inductance value can be produced in a coil?

2

Explain the motion of an electron in an electric field.

3

Discuss the phenomenon of photo emission.

4

Explain the principle of a solar cell.

5

Discuss the rectifying action of a P-N junction diode.

6

Explain the construction of a junction transistor.

7

Discuss the propagation of electromagnetic waves.

8

Draw the block diagram of a TV receiver and name the parts.

9

Discuss the working of a loudspeaker.

10

Explain the salient features of magnetic memory devices.

Part B
Answer all
questions All question carry 12 marks each

11

a) Discuss the principles of thermionic emission.
b) Discuss the working of a CRO, very briefly with the help of a block diagram.

Or

12

a) Explain mutual inductance and coefficient of coupling.
b) Discuss the application of a CRO.

13

a) Discuss the Zener Diode and its working.
b) Explain the characteristics of a junction transistors in common base configuration.

Or

14

a) Discuss the classification of materials based on conduction property.
b) Discuss the current amplification phenomenon in a junction transistor.

15

a) Discuss the classification of electromagnetic spectrum based on frequency.
b) Discuss amplitude modulation and its advantages and disadvantages.

Or

16

a) Draw the block schematic of a radio receiver and name the parts.
b) Discuss the frequency and phase modulation schemes.

17

a) Discuss the classification of indicating instruments for measurement.
b) Explain the working of an X-Y recorder.

Or

18

a) Discuss the working of LED’s and LCD’s.
b) Discuss the construction and applications for strain gauges.

19

a) Discuss the codes for character representation in computers.
b) Draw the block diagram of a digital computer and name the parts.

Or

20

a) Discuss the different types of ROM’s and explain their use.
b) Discuss the construction and use of typical floppy disk and drives.