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When Ns > Np then the transformer is

Correct answer: A. Step-up

  • A. Step-up
  • B. Step-down
  • C. Primary
  • D. Secondary

Explanation

In a transformer, when the number of turns in the secondary coil (Ns) is greater than the number of turns in the primary coil (Np), the output voltage increases. Such a transformer is called a step-up transformer.

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About Alternating Current

Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.

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