Agni College of Technology BM6402-Basics of Electrical Engineering Department of Biomedical Engineering Slow Learners Question Bank 1. Define reluctance (May 2015) ,May/June 2014,Dec2013,May2010) 2. What do you understand by hysteresis loss? (April/May2015) 3. Define magnetic flux and write its unit. (Apirl2015) 4. State the Faradays law of electromagnetic induction. (May2015, May/June2014) 5. Define Magneto motive force (MMF).Dec2013 6. Define transformer. (May 2008) 7. Write the Emf equation of a transformer. (May2015) 8. State the advantages and applications of auto transformer. (April2015) 9. Define voltage regulation of a transformer (May2015), (June2012).( Dec2010) 10. What are the losses in the transformer?(May2015) 11. Give the application of stepper motor (June2012,May2015, May2010) 12. Name the types of dc motor (May 2015,June2014,Dec2011) 13. What do you meant by back Emf (May2015) 14. Write the working principle of a stepper motor mention it applications.(Dec2013) 15. What are the methods by which the speed of a dc motor can be varies.(June2012) 16. Classify three phase induction motors. (May 2015) 17. Name the type of motor of a synchronous machines (May2015) 18. Distinguish between induction motor and synchronous motor (May2015) 19. What are the types of synchronous generator.(June2014) 20. Why single phase induction motor is not self starting (May 2015) 21. Draw the torque speed characteristics of ac series motor (May2015) 22. Define commutator motor. 23. What is a universal motor? (May2015) 24. What is the differences between unipolar and bipolar drive circuit? (June 2014) 25. What is an electric drive ? (Dec 2012)

Part B 1. Explain the construction and principle of working characteristics and applications of ac series motor. 2. Explain principle of operation of single phase induction motor. 3. Synchronous Motor Working Principle 4. Draw and explain Phasor diagram of inductively loaded synchronous generator 5. Describe the operation of single phase transformer explaining clearly the function of different Parts. 6. State and explain faradays law of electromagnetic induction. 7. Discuss the procedure to obtain the hysteresis loop of a magnetic material with neat diagram.