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Electrical Technology, Vol2: Machines and Measurements, 1/e by S. P. Bali

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36

Transformers — Single Phase

OBJECTIVES

In this chapter you will learn about:

  • Mutual inductance and methods of controlling mutual inductance
  • Dot convention and its significance
  • Transformer types and construction of transformers (single-phase only)
  • Current and voltage relations in an ideal transformer
  • General transformer equation and simple problems involving it
  • Practical transformer and circuit relations
  • Transformer ratings and connected problems
  • Impedance transformation in transformers–transformation ratio
  • Step-up and step-down autotransformers
  • Transformer equivalent circuit—referred to primary and secondary
  • Transformer regulation; open circuit test and short-circuit test
  • Pulse transformers, power transformers and instrumentation transformers ...

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