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A moving iron instrument can be used for
- a)DC only
- b)AC only
- c)Resistance only
- d)Both AC and DC
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance...
Explanation:
Moving iron instruments are commonly used for measuring both AC and DC currents. Below are the reasons why moving iron instruments can be used for both AC and DC:
AC Measurement:
- Moving iron instruments work on the principle of magnetic induction. When an alternating current flows through the instrument, it produces a magnetic field that interacts with the iron core, causing it to move. This movement is proportional to the current flowing through the instrument.
- The moving iron instrument can respond to the changes in the direction of the current, making it suitable for measuring AC currents.
DC Measurement:
- In the case of DC currents, the magnetic field produced by the current causes the iron core to move in a particular direction. The deflection of the iron core is directly proportional to the magnitude of the DC current flowing through the instrument.
- The moving iron instrument can accurately measure DC currents due to the consistent direction of the magnetic field produced by the DC current.
Conclusion:
- Due to their design and operating principle, moving iron instruments can effectively measure both AC and DC currents. This versatility makes them a popular choice for various electrical measurement applications.
Therefore, the correct answer to the question is option 'D' - Both AC and DC.
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Community Answer
A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance...
Moving Iron (MI) type instruments:
- Moving Iron (MI) type instruments can be used for both AC & DC measurements. But Moving Iron connected through the current Transformer block DC supply. So that Moving Iron connected through the current Transformer is only used for AC measurements.
- The moving iron meter has a large magnetic reluctance as compared to the PMMC meter. That’s why more power is required to operate the moving iron meter.
Advantages of moving iron:
- It is a universal instrument which can be used for the measurement of AC and DC quantities
- These instruments can withstand large loads and are not damaged even under severe overload conditions
- It is very cheap due to the simple construction
Disadvantages of moving iron:
- These instruments suffer from error due to hysteresis, frequency change, and stray losses
- The reading of the instrument is affected by temperature variation
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Question Description
A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 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 moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer?.
A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 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 moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A moving iron instrument can be used fora)DC onlyb)AC onlyc)Resistance onlyd)Both AC and DCCorrect answer is option 'D'. Can you explain this answer?.
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