What are ghost voltages?

What will be an ideal response?


If one voltmeter probe were to be connected to a grounded point, the meter reading would be erroneous or meaningless because there would not be a complete circuit. High-impedance voltmeters would probably indicate some amount of voltage caused by the capacitance of the ground and induced voltage produced by surrounding magnetic fields. These are generally referred to as ghost voltages.

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A stream normally has a flow of 972.45 gpm.  During dry conditions, the flow is ? of normal.  During dry conditions, the flow is:

A. ?108.05 gpm B. ?194.49 gpm C. ?540.25 gpm D. ?1,750.41 gpm

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If a spreadsheet cell that is formatted to display one decimal place contains “=3.1*2.5+5.7” the cell would display:

A. 13.5 B. 13.45 C. 25.4 D. 25.42

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When installing drywall in a shower area, the appropriate board to use is _____

a. water-resistant drywall b. cement board c. coreboard d. architectural panels

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Which of the following can cause a compressor's internal overload to open?

A. system undercharge B. system overcharge C. faulty starting component(s) D. all of the above

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