Download Examination Paper: Analogue Electronics 1 (ELTR 6002) - Cork Institute of Technology and more Exams Digital & Analog Electronics in PDF only on Docsity!
CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2012/
Module Title: ANALOGUE ELECTRONICS 1
Module Code: ELTR
School: MECHANICAL, ELECTRICAL, & PROCESS ENGINEERING
Programme Titles: Bachelor of Engineering in Electronic Engineering, Year 1 Bachelor of Engineering in Electronic Systems Engineering, Year 1
Programme Codes: EELXE_7_Y EELES_8_Y
External Examiners: Mr T. O’Brien Mr I. Kennedy Internal Examiner: Mr M. O’Gorman
Instructions: Answer 5 of the 7 Questions. All Questions Carry Equal Marks.
Duration: 2 Hours
Sitting: Winter 2012
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 Draw a sketch of the electromagnetic spectrum showing the main regions into which electromagnetic waves of different frequencies are allocated. Ensure that approximate frequencies for each of the regions is indicated. [20 Marks]
Q.2 (a) Define the decibel. [6 Marks] (b) Calculate the following power ratios in decibels; [8 Marks] (i) 1, (ii) 4, (iii) 1000, (iv) 0.
(c) Explain the term dBm when used as a standard reference level. [6 Marks]
Q.3 A sinusoidal voltage waveform is given by the equation v = 6 sin(1570.8 t ). Determine; (a) the peak value, [4 Marks] (b) the angular frequency, [4 Marks] (c) the cyclic frequency, [4 Marks] (d) the periodic time, [4 Marks] (e) the instantaneous voltage 1.5 ms into the cycle. [4 Marks]
Q.4 (a) What is meant by donor doping and acceptor doping? [12 Marks]
(b) Explain how the above processes increase the conductivity of the material. [8 Marks]
