Exam Paper: Electrical Science (ELEC 6018) - BEng in Electrical Engineering - Stage 1, Exams of Electrical Engineering

Download Exam Paper: Electrical Science (ELEC 6018) - BEng in Electrical Engineering - Stage 1 and more Exams Electrical Engineering in PDF only on Docsity! Page 1 of 4 CORK INSTITUTE OF TECHNOLOGY INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ Semester 1 Examinations 2008/09 Module Title: Electrical Science Module Code: ELEC 6018 School: Electrical and 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.Noel Mulcahy Instructions: Answer All Questions Duration: 2 Hours Sitting: Winter 2008 Requirements for this examination: Use of a Scientifc Calculator is permitted. 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. Page 2 of 4 Q1. In the circuit shown below, the current in the 15Ω resistor is 3A. Calculate: 1. The current in each resistor. (8 marks) 2. The voltage drop across each resistor. (5 marks) 3. The supply voltage V. (2 marks) 4. The total power dissipated in the circuit. (5 marks) 20 Ω 25 Ω 15 Ω 10 Ω + - 3A Q2. a. State Kirchhoff's Laws and apply them to the solution of the following problem. (4 Marks) b. Two batteries, A and B, are connected in parallel, and a 3 Ω resistor is connected across the battery terminals. The e.m.f. and the internal resistance of battery A are 42 V and 2Ω respectively, and the corresponding values for battery B are 32 V and 0.5 Ω respectively. 3 Ω 0.5 Ω 2 Ω 42V 32V (16 Marks)