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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2008/
Module Title: ANALOGUE ELECTRONICS 1
Module Code: ELTR
School: ELECTRICAL & ELECTRONIC ENGINEERING
Programme Title: Bachelor of Engineering in Electronic Engineering, Year 1
Programme Code: EELXE_7_Y
External Examiner(s): Mr. D. Denieffe Dr. P. O’Sullivan Internal Examiner: Mr M. O’Gorman
Instructions: Answer 5 of the 8 Questions. All Questions Carry Equal Marks.
Duration: 2 Hours
Sitting: Winter 2008
Requirements for this examination: N/A
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you are attempting the correct examination paper. If in doubt please contact an Invigilator.
Q.1 (a) Briefly explain what is meant by a complex waveform. [6 Marks] (b) Explain what is meant by the frequency spectrum of a complex waveform. [7 Marks] (c) Sketch the frequency spectrum of a square wave. [7 Marks]
Q.2 (a) Sketch forward and reverse characteristics for a typical silicon diode and explain their shape. [15%] (b) Ignoring any forward voltage dropped across the diodes, calculate the value of ‘V’ in the circuit below. [5%]
+6V
- 6V
+12V
V =?
-12V
0V
Q.3 (a) Briefly explain the differences between continuous and discrete information sources. [10 Marks] (b) Describe how analogue and digital signals might be used to represent this information. [10 Marks]
Q. 4 Draw a sketch of the electromagnetic spectrum showing the main regions into which electromagnetic waves of different frequencies are allocated. [20 Marks]
