page_88

< previous page | page_88 | next page >

Page 88

| STUDY QUESTIONS |

| 1. What is meant by the polarity of a transformer and how is it usually indicated? |

| 2. How may the polarity of a transformer be determined? |

| 3. What factors should be taken into consideration when connecting transformers in parallel and why? |

| 4. What is the most widespread distribution connection used, and how may the secondary coils be connected? |

| 5. What is the difference between a single-phase and a polyphase system? |

| 6. How may transformers be connected in a three-phase system and what are the relationships between their primary and secondary voltages? |

| 7. What precautions should be taken in making a delta connection? |

| 8. What are some advantages of the delta connection? |

| 9. What are some of the advantages of a wye system? |

| 10. What precautions should be taken in connecting three-phase transformers in parallel? |

< previous page | page_88 | next page >