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How can the meter circuit be isolated from the power circuit?
- a)by grounding
- b)through electrical isolation
- c)by physical separation
- d)through mechanical isolation
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
How can the meter circuit be isolated from the power circuit?a)by grou...
Electrical Isolation for Meter Circuit
Explanation:
- Electrical isolation refers to the separation of the meter circuit from the power circuit to prevent any interference or damage.
- This can be achieved by using electrical isolation techniques which include using isolation transformers, optocouplers, or relays.
- An isolation transformer is commonly used to provide electrical isolation between the power supply and the meter circuit. It has separate primary and secondary windings that are not electrically connected.
- Optocouplers are another common method used for electrical isolation. They consist of an LED and a photodetector separated by a transparent barrier to transmit signals without electrical connection.
- Relays can also be used to provide electrical isolation by using a coil that is isolated from the contacts, allowing the meter circuit to be controlled without a direct electrical connection.
- By implementing these electrical isolation techniques, the meter circuit can be effectively isolated from the power circuit to ensure safe and accurate measurement.
Therefore, the correct answer is option B: through electrical isolation.
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Community Answer
How can the meter circuit be isolated from the power circuit?a)by grou...
Leads of the secondary winding transformer are brought to the switch board thus separating them from high voltage windings. In this way, the meter circuit is isolated from the high voltage power circuit.
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How can the meter circuit be isolated from the power circuit?a)by groundingb)through electrical isolationc)by physical separationd)through mechanical isolationCorrect answer is option 'B'. Can you explain this answer?
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