Transformer 20073
The transformer is oil-cooled and transforms a power of 20MW with an efficiency of 92%. Determine the temperature of the oil at the outlet of the transformer if the oil was 20°C when it entered the transformer. 2.5 liters of oil will flow through the transformer in 1 second. The density of the oil is 960 kg/m3, and the specific heat capacity of the oil is 2.09 kJ×kg-1×K-1.
Correct answer:
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basic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem
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