Download Angular Frequency - Analogue Electronics - Exam and more Exams Digital & Analog Electronics in PDF only on Docsity! 1 ELTR 6002 CORK INSTITUTE OF TECHNOLOGY INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ Autumn Examinations 2008/09 Module Title: Analogue Electronics 1 Module Code: ELTR 6002 School: Electrical & Electronic Engineering Programme Title: Bachelor of Engineering in Electronic Engineering, Year 1 Programme Code: EELXE_7_Y1 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: Autumn 2009 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. 2 ELTR 6002 Q.1 The following terms are sine wave parameters; Explain what each terms means, using diagrams if necessary. [20 Marks] (a) peak voltage (VP), (b) peak-to-peak voltage (VP/P), (c) period, (d) frequency, (e) phase difference. Q.2 A sinusoidal voltage waveform is given by the equation v = 200 sin(628t). 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 6.35 ms into the cycle. [4 Marks] Q.3 (a) Define the decibel. [8 Marks] (b) Express the following power ratios as gains or losses in decibels; (i) 400, [3 Marks] (ii) 100, [3 Marks] (iii) 1 [3 Marks] (iv) 0.5. [3 Marks] Q.4 The input signal voltage level to an amplifier is +24dB relative to 1µV, and the amplifier has a decibel voltage gain of 30dB. If the input and ouput resistances are equal, calculate the input and output voltages. [20 Marks] Q. 5 (a) Sketch a plot to show how the amplitude of the saturation current through a reverse-biased diode varies with temperature. [10 Marks] (b) Give a brief explanation. [10 Marks]
