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A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________
- a)will be wrong
- b)will be accurate
- c)of ammeter will burn
- d)none of the mentioned
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
A single phase transformer of 2200/220 V having rated l.v. current of ...
The current in the h.v. winding will be around 10 A but the ammeter is of 1 A rating. So, it will burn off.
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A single phase transformer of 2200/220 V having rated l.v. current of ...
Reason for Option C:
The open circuit test on the high voltage side of the transformer involves supplying rated low voltage current to the primary winding while keeping the secondary winding open. In this case, the rated low voltage current is 150 A.
Potential Issue:
When conducting the open circuit test on the high voltage side, the ammeter used is rated for 1A. Since the rated low voltage current is 150 A, the ammeter will not be able to handle such a high current. As a result, the ammeter may burn or get damaged when connected in the circuit to measure the high current.
Implications:
If the ammeter burns or gets damaged during the open circuit test, it can lead to inaccurate measurements and potentially unsafe conditions. This can affect the reliability of the test results and pose a risk to the equipment and personnel involved in the testing process.
Conclusion:
Therefore, it is crucial to use appropriate instruments rated for the expected currents when conducting tests on transformers to ensure accurate measurements and prevent damage to the equipment. In this case, using an ammeter rated for a higher current capacity would be necessary to avoid the risk of burning or damaging the instrument during the open circuit test.
The open circuit test on the high voltage side of the transformer involves supplying rated low voltage current to the primary winding while keeping the secondary winding open. In this case, the rated low voltage current is 150 A.
Potential Issue:
When conducting the open circuit test on the high voltage side, the ammeter used is rated for 1A. Since the rated low voltage current is 150 A, the ammeter will not be able to handle such a high current. As a result, the ammeter may burn or get damaged when connected in the circuit to measure the high current.
Implications:
If the ammeter burns or gets damaged during the open circuit test, it can lead to inaccurate measurements and potentially unsafe conditions. This can affect the reliability of the test results and pose a risk to the equipment and personnel involved in the testing process.
Conclusion:
Therefore, it is crucial to use appropriate instruments rated for the expected currents when conducting tests on transformers to ensure accurate measurements and prevent damage to the equipment. In this case, using an ammeter rated for a higher current capacity would be necessary to avoid the risk of burning or damaging the instrument during the open circuit test.
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A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. Can you explain this answer?
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A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. 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 single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. 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 single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. Can you explain this answer?.
A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. 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 single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. 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 single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________a)will be wrongb)will be accuratec)of ammeter will burnd)none of the mentionedCorrect answer is option 'C'. Can you explain this answer?.
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