A 20kVA closer transformer located inside a building is used to step down the voltage for the building. It is connected to a primary 4800 V AC power source. The ratio of the number of primary windings to the number of secondary windings on the transformer is 20 to 40. (a) What is the voltage provided to the building? (b) What is the amount of current provided to the building? (c) If the building consumes 3200W of power, what is its power factor? (d) What is the phase angle of the secondary power source in the Building?
A 20kVA closer transformer located inside a building is used to step down the voltage for the building. It is connected to a primary 4800 V AC power source. The ratio of the number of primary windings to the number of secondary windings on the transformer is 20 to 40. (a) What is the voltage provided to the building? (b) What is the amount of current provided to the building? (c) If the building consumes 3200W of power, what is its power factor? (d) What is the phase angle of the secondary power source in the Building?
Chapter15: Alternating-current Circuits
Section: Chapter Questions
Problem 44P: A step-up transformer is designed so that the output of its secondary winding is 2000 V(rms) when...
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A 20kVA closer transformer located inside a building is used to step down the voltage for the building. It is connected to a primary 4800 V AC power source. The ratio of the number of primary windings to the number of secondary windings on the transformer is 20 to 40. (a) What is the voltage provided to the building? (b) What is the amount of current provided to the building? (c) If the building consumes 3200W of power, what is its power factor? (d) What is the phase angle of the secondary power source in the Building?
answer letter (D) since a-c already answered
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