The full load copper loss of a 75-KVA single phase transformer is thrice the iron losses. At half load unity pf, the efficiency is 98%. Determine the full load efficiency at 0.8 pf lagging. a. 95.77% b. 98.45% c. 94.78% d. 97.17%
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
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TOPIC: AC MACHINE
INSTRUCTIONS
- Please write clearly and understandable way
- Write all the corresponding Given with their corresponding symbols and units
- Solve in step-by-step, no shortcut (I need to learn as a beginner)
- Underline twice the Final Answer
PROBLEM:
The full load copper loss of a 75-KVA single phase transformer is thrice the iron losses. At half load unity pf, the efficiency is 98%. Determine the full load efficiency at 0.8 pf lagging.
a. 95.77%
b. 98.45%
c. 94.78%
d. 97.17%
Step by step
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