rrolmsted5126 rrolmsted5126
  • 20-02-2024
  • Engineering
contestada

A 1-phase transformer with a ratio of 440/110 V takes a no-load current of 5 A at 0.2 power factor lagging. If the secondary supplies a current of 120 A at a power factor of 0.8 lagging, the current taken by the primary is:
(a) 55 A
(b) 60 A
(c) 65 A
(d) 70 A

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