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Question
A DC voltmeter is capable of measuring a maximum of 300V. It is used to measure the voltage across a device operating at 220 voltage AC supply, the reading of the voltmeter will be ______.
A DC voltmeter is capable of measuring a maximum of 300V. It is used to measure the voltage across a device operating at 220 voltage AC supply, the reading of the voltmeter will be ______.
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Solution
The correct option is D Zero
DC measuring instruments cannot be used to measure AC voltage or current as DC measuring instruments gives zero reading while measuring AC supply.
DC measuring instruments cannot be used to measure AC voltage or current as DC measuring instruments gives zero reading while measuring AC supply.
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