EXAMPLE 1 When running on full load at 400 V, a 3-phase star-connected induction motor takes an input current of 60 A

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answerhappygod
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EXAMPLE 1 When running on full load at 400 V, a 3-phase star-connected induction motor takes an input current of 60 A

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EXAMPLE 1

When running on full load at 400 V, a 3-phase star-connected induction motor takes an

input current of 60 A at 0.85 p.f. When running light (or no-load) at 400 V, the motor input

current and power are 16 A and 2200 watts respectively. Its friction and windage losses are

800 watts. If stator resistance per phase is 0.6 Ω, calculate the shaft power and its efficiency

at a full-load slip of 0.04
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