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22-Elec-A6 Power Systems and Machines: May 2014

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Two-Wattmeter Measurement and Power-Factor Correction
  2. Question 2 Two-Window Magnetic Circuit with Air Gaps
  3. Question 3 Single-Phase Transformer — Tests, Efficiency and Regulation
  4. Question 4 Separately-Excited / Shunt DC Motor — Field Weakening
  5. Question 5 Synchronous Generator on an Infinite Bus
  6. Question 6 Three-Phase Induction Motor Performance

Start with Question 1 →

Paper format: Closed-book written exam, 3 hours. Six questions of equal value (20 marks each); five constitute a complete paper. All six are solved here as a study resource. AC quantities are rms; three-phase voltages are line-to-line and power is total power unless noted.

Reference texts: S. J. Chapman, Electric Machinery Fundamentals, 5th ed. (McGraw-Hill); B. S. Guru & H. R. Hiziroglu, Electric Machinery and Transformers, 3rd ed. (Oxford); P. C. Sen, Principles of Electric Machines and Power Electronics; T. Wildi, Electrical Machines, Drives, and Power Systems.