A single-phase transformer has a turns ratio of 1 : 2 and

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A single-phase transformer has a turns ratio of 1 : 2 and is connected to a purely resistive load as shown in the figure given below. The magnetizing current drawn is 1 A, and the secondary current is 1 A. If core losses and leakage reactances are neglected, the primary current is

1. 1.41 A
2. 2 A
3. 2.24 A
4. 3 A

Correct Option: C

i ₀ = 1A, i ₂ = 1A,

∴ i₂' =	n₂	i₂ =	2.1	= 2 A
	n₁		1

i₁ = √i₀² + i₂'²
i₁ = √1² + 2² = √5 = 2.24 amp.