Electrical Instruments and Measurements

Electricity and Magnetism Level 2

A current transformer has 5 primary turns and 300 secondary turns. The total impedance of the secondary is (0.583+j 0.25) ohm. The secondary current is 7 A. The ampere turns required to supply excitation and iron losses are respectively 10 and 5 per volt induced in the secondary. So, Determine the primary current and phase angle of the transformer.

509.05 509.05 A A , 0.8 8 ∘ 0.88^\circ 427.61 427.61 A A , 1.1 1 ∘ 1.11^\circ 519.05 519.05 A A , 1.8 8 ∘ 1.88^\circ 427.61 427.61 A A , 0.8 8 ∘ 0.88^\circ

Nazmus Sakib by Nazmus sakib , 24, Bangladesh

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