A single-phase transformer used for street lighting (high-pressure sodium discharge lamps) converts 4.6 kV rms to...

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A single-phase transformer used for street lighting (high-pressure sodium discharge lamps) converts 4.6 kV rms to 230 V rms with an efficiency of 0.6. Assuming the power factor seen by the high voltage source is 0.8 and the primary apparent power is 16 kVA. Find the transformer turns ratio. A single-phase transformer used for street lighting (high-pressure sodium discharge lamps) converts 4.6 kV rms to 230 V rms with an efficiency of 0.6. Assuming the power factor seen by the high voltage source is 0.8 and the primary apparent power is 16 kVA. Find the transformer turns ratio.

Answer rating: 100% (QA)

To find the transformer turns ratiowe can use the following equation Turns ratio Vp Vs where Vp is the primary voltage 46 kV rms in this case Vs is the secondary voltage 230 V rms in this case Therefo... View the full answer