Which of the following is NOT a correctly matched pair?

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MPPGCL JE Electrical 28 April 2023 Shift 2 Official Paper
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  1. Wien bridge - frequency
  2. Voltmeter - potential difference
  3. Megger - resistance
  4. Ammeter - flux

Answer (Detailed Solution Below)

Option 4 : Ammeter - flux
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Detailed Solution

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The correct answer is option 4.

Analysis of all options:

Option 1: The Wien bridge is an AC bridge circuit used for frequency measurement.

Option 2: A voltmeter is used to measure the potential difference (voltage) between two points in a circuit.

Option 3: A Megger (Megohmmeter) is used to measure high insulation resistance in electrical circuits.

Option 4: An Ammeter measures current (in amperes), not magnetic flux.

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