Rectifiers - Industrial Electronics - Past Exam Paper, Exams of Industrial Engineering

Download Rectifiers - Industrial Electronics - Past Exam Paper and more Exams Industrial Engineering in PDF only on Docsity! CORK INSTITUTE OF TECHNOLOGY INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ Semester 1 Examinations 2008/09 Module Title: Industrial Electronics Module Code: ELEC 6024 School: Electrical & Electronic Engineering Programme Title: Bachelor of Engineering in Electrical Engineering – Stage 1 Programme Code: EELEC_7_Y1 External Examiner(s): Mr. Gerard Beecher and Dr. Maeve Duffy Internal Examiner(s): Mr. Richard Daly Instructions: Answer THREE questions. All formula for calculations must be shown. Duration: 2 Hours Sitting: Winter 2008 Requirements for this examination: Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator. Q1. (a) What is the purpose of rectifiers in electronic equipment? (3 Marks) (b) Using the reference points in Figure 1, explain the operation of the full- wave bridge rectifier and indicate the polarity of the voltage at the output terminals C and D. (Ignore capacitor in description). (10 Marks) (c) Calculate for the rectifier shown: (i) The maximum voltage Vm across A-B. (3 Marks) (ii) The peak voltage Vp across C-D. (4 Marks) (iii) The average voltage Vd.c. across the load given that VRIP = 20% Vp. (5 Marks) (d) Draw a fully detailed waveform for the output voltage across the load and show by means of a straight line, the average voltage. (8 Marks)