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A transformer has a turns-ratio of 8 and its primary is connected to a 240V, 50Hz supply. Figure 4c shows the simplified
Posted: Thu May 26, 2022 10:35 am
by answerhappygod
- A Transformer Has A Turns Ratio Of 8 And Its Primary Is Connected To A 240v 50hz Supply Figure 4c Shows The Simplified 1 (58.72 KiB) Viewed 20 times
A transformer has a turns-ratio of 8 and its primary is connected to a 240V, 50Hz supply. Figure 4c shows the simplified equivalent circuit in which the magnetizing branch has been moved to the primary terminals. The transformer parameters, which are all referred to the primary are as follows: LM = 0.68H, 1₁1= l12 = 12mH, R₁ = 102, R₂ = 30 (i) Determine the magnitude of the magnetizing current Jo [2 marks] (ii) A 692 (actual value) resistive load is now connected to the secondary. Determine the magnitude of the primary current I₁ [5 marks] (iii) Determine the efficiency of the transformer under this operating condition. [4 marks]