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b. 4:57 PM K/S 42.06 AO DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER TEST 2022/2023 SESSION COURSE TITLE: BASIC ELECTRICAL ENGINEERING II COURSE CODE: EEE 229 TIME ALLOWED: 30 Minutes Question 1 INSTRUCTIONS: Answer Any 4 Question a. For a source-free RC circuit shown below, prove that v(t) = voe In figure below let ve(0)-15 v. Find ve, vx, and lx for t> 0. 5 Ω 0.1 F 120 -t/RC RR-C Question 2 The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates with a flux of 0.05 Wb. Find (i) number of H.V and L.V turns per phase, (ii) e.m.f per turn (iii) full load H.V and L.V turns per phase. b. A 5 kVA, 200/400 V, 50 Hz single phase transformer gave the following test results. Open-circuit test performed on the low voltage side: 200 V, 0.7 A, and 60 W.Short- circuit test performed on the high voltage side: 22 V, 16 A, and 120 W.Calculate the equivalent parameters of the transformer. Question 3 A vector is represented by 20e/2/3. Write the various equivalent forms of the vector and illustrate by means of a vector diagram, the magnitude and position of the above vector. UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER EXAMINATION 2021/2022 SESSION COURSE TITLE: COURSE CODE: TIME ALLOWED: COMPUTER PROGRAMING EEEE224 TWO HOURS (2HRS 30MINS) NSTRUCTIONS: ANSWER ANY FOUR QUESTIONS (ALL QUESTIONS ARE ALLOTTED QUAL MARKS EACH) ||| O כ

b. 4:57 PM K/S 42.06 AO DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER TEST 2022/2023 SESSION COURSE TITLE: BASIC ELECTRICAL ENGINEERING II COURSE CODE: EEE 229 TIME ALLOWED: 30 Minutes Question 1 INSTRUCTIONS: Answer Any 4 Question a. For a source-free RC circuit shown below, prove that v(t) = voe In figure below let ve(0)-15 v. Find ve, vx, and lx for t> 0. 5 Ω 0.1 F 120 -t/RC RR-C Question 2 The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates with a flux of 0.05 Wb. Find (i) number of H.V and L.V turns per phase, (ii) e.m.f per turn (iii) full load H.V and L.V turns per phase. b. A 5 kVA, 200/400 V, 50 Hz single phase transformer gave the following test results. Open-circuit test performed on the low voltage side: 200 V, 0.7 A, and 60 W.Short- circuit test performed on the high voltage side: 22 V, 16 A, and 120 W.Calculate the equivalent parameters of the transformer. Question 3 A vector is represented by 20e/2/3. Write the various equivalent forms of the vector and illustrate by means of a vector diagram, the magnitude and position of the above vector. UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER EXAMINATION 2021/2022 SESSION COURSE TITLE: COURSE CODE: TIME ALLOWED: COMPUTER PROGRAMING EEEE224 TWO HOURS (2HRS 30MINS) NSTRUCTIONS: ANSWER ANY FOUR QUESTIONS (ALL QUESTIONS ARE ALLOTTED QUAL MARKS EACH) ||| O כ

Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter6: Power Flows
Section: Chapter Questions
Problem 6.61P
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b. 4:57 PM K/S 42.06 AO DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER TEST 2022/2023 SESSION COURSE TITLE: BASIC ELECTRICAL ENGINEERING II COURSE CODE: EEE 229 TIME ALLOWED: 30 Minutes Question 1 INSTRUCTIONS: Answer Any 4 Question a. For a source-free RC circuit shown below, prove that v(t) = voe In figure below let ve(0)-15 v. Find ve, vx, and lx for t> 0. 5 Ω 0.1 F 120 -t/RC RR-C Question 2 The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates with a flux of 0.05 Wb. Find (i) number of H.V and L.V turns per phase, (ii) e.m.f per turn (iii) full load H.V and L.V turns per phase. b. A 5 kVA, 200/400 V, 50 Hz single phase transformer gave the following test results. Open-circuit test performed on the low voltage side: 200 V, 0.7 A, and 60 W.Short- circuit test performed on the high voltage side: 22 V, 16 A, and 120 W.Calculate the equivalent parameters of the transformer. Question 3 A vector is represented by 20e/2/3. Write the various equivalent forms of the vector and illustrate by means of a vector diagram, the magnitude and position of the above vector. UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER EXAMINATION 2021/2022 SESSION COURSE TITLE: COURSE CODE: TIME ALLOWED: COMPUTER PROGRAMING EEEE224 TWO HOURS (2HRS 30MINS) NSTRUCTIONS: ANSWER ANY FOUR QUESTIONS (ALL QUESTIONS ARE ALLOTTED QUAL MARKS EACH) ||| O כ
Transcribed Image Text:b. 4:57 PM K/S 42.06 AO DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER TEST 2022/2023 SESSION COURSE TITLE: BASIC ELECTRICAL ENGINEERING II COURSE CODE: EEE 229 TIME ALLOWED: 30 Minutes Question 1 INSTRUCTIONS: Answer Any 4 Question a. For a source-free RC circuit shown below, prove that v(t) = voe In figure below let ve(0)-15 v. Find ve, vx, and lx for t> 0. 5 Ω 0.1 F 120 -t/RC RR-C Question 2 The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates with a flux of 0.05 Wb. Find (i) number of H.V and L.V turns per phase, (ii) e.m.f per turn (iii) full load H.V and L.V turns per phase. b. A 5 kVA, 200/400 V, 50 Hz single phase transformer gave the following test results. Open-circuit test performed on the low voltage side: 200 V, 0.7 A, and 60 W.Short- circuit test performed on the high voltage side: 22 V, 16 A, and 120 W.Calculate the equivalent parameters of the transformer. Question 3 A vector is represented by 20e/2/3. Write the various equivalent forms of the vector and illustrate by means of a vector diagram, the magnitude and position of the above vector. UNIVERSITY OF ABUJA FACULTY OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SECOND SEMESTER EXAMINATION 2021/2022 SESSION COURSE TITLE: COURSE CODE: TIME ALLOWED: COMPUTER PROGRAMING EEEE224 TWO HOURS (2HRS 30MINS) NSTRUCTIONS: ANSWER ANY FOUR QUESTIONS (ALL QUESTIONS ARE ALLOTTED QUAL MARKS EACH) ||| O כ
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