

InterviewSolution
Saved Bookmarks
1. |
When a voltage measuring device is connected to a.c. mains the meter shows the steady input voltage of `220 V`. This meansA. input voltage cannot be a.c. voltage, but a.d.c voltage.B. maximum input voltage is `220 V`C. the meter reads not `v` but `lt v^(2) gt` and is calibrated to read `sqrt(lt v^(2) gt)`.D. the pointer of the meter is stuck by some mechanical defect |
Answer» Correct Answer - 3 The voltmeter connected to a.c. mains is calibrated to read rood mean square value of virtual value of a.c. voltage. |
|