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This post was last edited by Wang Tianze on 2015-11-15 at 17:53. 21. In power systems, the option that has electric shock protection is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy Disabled
21. In a power system, the one with electric shock protection function is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy
21. In a power system, the one with electric shock protection function is (b). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (c). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy
21. In power systems, the one with electric shock protection function is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy
21. In a power system, the one with electric shock protection function is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy
This post was last edited by zgjsgylzdzdyh on 2015-11-14 17:35: B, C
21 B. Ground wire 22 C. Sensitivity
21. In a power system, the one with electric shock protection function is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy
21. In power systems, the one with electric shock protection function is (B). A. Neutral line B. Ground wire C. Phase wire D. Connection wire 22. The ratio of the change in the instrument’s output to the change in the measured variable that causes that change is called the instrument’s (C). A. Relative error B. Limit of sensitivity C. Sensitivity D. Accuracy