CHAPTER 21 QUIZ ELECTRICAL MACHINES 1. How is power transferred in transformer action? 2. How many circuits will you find in transformer action? 3. What controls the power consumption in trans- former action? 4. Must the windings be stationary in order to have transformer action? CHAPTER 21 ANSWERS ELECTRICAL MACHINES 1. By mutual induction. 2. At least two. 3. Secondary current. 4. No, all that is necessary is two circuits with pulsating d.c. or a.c. on the primary. |