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Electrical Technology 2020-3-17

2020-03-17View Original

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True or False question: Please answer whether it is correct or incorrect. 3 points for a correct answer, 2 points for an incorrect answer, and 5 points for a detailed explanation of the reason. When measuring a 10V voltage with a 0.5 class 100V voltmeter and a 1.5 class 15V voltmeter, the former has a smaller measurement error.
Reply #22020-03-17
Error. For a 0.5 grade 100V meter, the maximum error is 0.5V; for a 1.5 grade 15V meter, the maximum error is 15*1.5/100=0.225V. Moreover, the latter is more suitable for measuring 10V, as it results in a smaller error.
Reply #32020-03-17
For a 0.5 grade 100V meter, the maximum error is 0.5V; for a 1.5 grade 15V meter, the maximum error is 15*1.5/100=0.225V. Moreover, it is more appropriate to use the latter meter for measuring 10V, as it results in a smaller error
Reply #42020-03-17
For a grade 0.5 100V meter, the maximum error is 0.5V; for a grade 1.5 15V meter, the maximum error is 15*1.5/100=0.225V. Moreover, it is more appropriate to use the latter meter for measuring 10V, as it results in a smaller error

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