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A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured as an autotransformer as shown in the figure. The efficiency of the two winding transformer is 98% on full load at unity power factor. Which of the following statements is true regarding the efficiency of the autotransformer on full load unity power factor?
  • a)
    The efficiency of the autotransformer remains the same as the two winding transformer that is 98%
  • b)
    The efficiency of the autotransformer will be 99.77%
  • c)
    The efficiency of the autotransformer will be 99.77%
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured ...
For the two winding transformer voltage and currents are as following
V1 = 2400V, V2 = 240V, S0 = 120kVA
Now when connected as auto-transformer as shown in the figure
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Community Answer
A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured ...
For the two winding transformer voltage and currents are as following
V1 = 2400V, V2 = 240V, S0 = 120kVA
Now when connected as auto-transformer as shown in the figure
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A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured as an autotransformer as shown in the figure. The efficiency of the two winding transformer is 98% on full load at unity power factor. Which of the following statements is true regarding the efficiency of the autotransformer on full load unity power factor?a)The efficiency of the autotransformer remains the same as the two winding transformer that is 98%b)The efficiency of the autotransformer will be 99.77%c)The efficiency of the autotransformer will be 99.77%d)None of theseCorrect answer is option 'B'. Can you explain this answer?
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A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured as an autotransformer as shown in the figure. The efficiency of the two winding transformer is 98% on full load at unity power factor. Which of the following statements is true regarding the efficiency of the autotransformer on full load unity power factor?a)The efficiency of the autotransformer remains the same as the two winding transformer that is 98%b)The efficiency of the autotransformer will be 99.77%c)The efficiency of the autotransformer will be 99.77%d)None of theseCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured as an autotransformer as shown in the figure. The efficiency of the two winding transformer is 98% on full load at unity power factor. Which of the following statements is true regarding the efficiency of the autotransformer on full load unity power factor?a)The efficiency of the autotransformer remains the same as the two winding transformer that is 98%b)The efficiency of the autotransformer will be 99.77%c)The efficiency of the autotransformer will be 99.77%d)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 1 - ⲫ, 2400/240 V, 120 kVA two winding transformer is reconfigured as an autotransformer as shown in the figure. The efficiency of the two winding transformer is 98% on full load at unity power factor. Which of the following statements is true regarding the efficiency of the autotransformer on full load unity power factor?a)The efficiency of the autotransformer remains the same as the two winding transformer that is 98%b)The efficiency of the autotransformer will be 99.77%c)The efficiency of the autotransformer will be 99.77%d)None of theseCorrect answer is option 'B'. Can you explain this answer?.
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