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Why is voltmeter high?
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what is power factor? whether it should be high or low? why?

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Why is electricity transferred by the national grid at A high PD but low current?

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Why KVL and KCL are not applicable at high frequency?

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Why does instrumentation amplifier has high input impedance?

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Why do we prefer potentiometer to compare the emfs of cells than a voltmeter?

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Why the reading of emf by a voltmeter is less than that by a potentiometer?

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Why does potentiometer measure the potential difference more accurate than a voltmeter?

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Why do we prefer a potentiometer to compare the emf of cells than a voltmeter?

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Why is a potentiometer used instead of a voltmeter?

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What are the differences between high CRI and low CRI LEDs?

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What is the difference between a high-power LED and a low-power LED?

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What is the importance of a heat sink for high-power LEDs?

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What is the difference between a standard LED and a high-power LED?

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What is a high-frequency transformer?
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What are the challenges of designing high-frequency SMPS?

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How do you achieve high reliability in SMPS?
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