A 50-kVA distribution transformer has a full load copper loss of 1 kW and an iron loss of 1 kW. The transformer is loaded as follows: full load at unity pf for 8 hours, one-half load at unity for 6 hours and no-load the rest of the day. Calculate the energy efficiency of the transformer.
A 50-kVA distribution transformer has a full load copper loss of 1 kW and an iron loss of 1 kW. The transformer is loaded as follows: full load at unity pf for 8 hours, one-half load at unity for 6 hours and no-load the rest of the day. Calculate the energy efficiency of the transformer.
Chapter4: Symbols
Section: Chapter Questions
Problem 7SQ: The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d....
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59. A 50-kVA distribution transformer has a full load copper loss of 1 kW and an iron loss of 1 kW. The transformer is loaded as follows: full load at unity pf for 8 hours, one-half load at unity for 6 hours and no-load the rest of the day. Calculate the energy efficiency of the transformer.
a. 94.25 %
b. 92.34 %
c. 95.43 %
d. 93.67 %
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