NEIEP 400 Final Exam Version 1 (Latest 2024 / 2025 Update) Questions and Verified Answers | 100% Correct | Grade A
Question:
What is the power available from a 68 kVA transformer connected in open delta configuration ?
Answer:
39.44 kVA
Question:
The secondary winding of an 11,000 volt to 220 volt transformer has 50 windings on the secondary How many turns are on the primary winding ?
Answer:
2500 turns
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Question:
A transformer has 728 turns on the primary winding and 56 turns on the secondary With 120 volts applied on the primary , what is the output voltage on the secondary ?
Answer:
9.23 volts
Question:
A transformer has a primary voltage of 440 V with 100 turns and a 15 : 1 voltage ratio of transformation . With a primary current of 25 amps , what is the current in the secondary ?
Answer:
375 amps
Question:
Which statement best describes eddy currents ?
Answer:
They are circulating currents set up by magnetic induction .
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Question:
With the following values : Ep = 208 VAC ; Es = 35 VAC ; Ip = 3.8 amps ; Is =
21.42 amps , what is the efficiency of this transformer ?
Answer:
95 %
Question:
Which of the following would describe a transformer with a fixed voltage
transformation ratio of 1:12 ?
Answer:
Step - up transformer
Question:
Which of the following would describe a transformer with a primary current of 27 amps and a secondary current of 1 amp ?
Answer:
Step - down transformer
Question:
Which statement is correct regarding transformers?
Answer:
The primary winding terminals are identified with the letter H
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