Variation of input voltage sufficient in duration to allow visual observation of a change in electric light source intensity is reffered as

Ratio between the RMS value and the average value of a periodic waveform. It is known as

Number of complete cycles of a periodic wave in a unit time, usually 1 sec is called as

Which of the following is true for this statement? "Conductor or a body of conductors in intimate contact with earth for the purpose of providing a connection with the ground"

System of interconnected bare conductors arranged in a pattern over a specified area and buried below the surface of the earth is called as

Ground loop is Potentially detrimental loop formed when two or more points in an electrical system that are nominally at ground potential are connected by a conducting path such that either or both points are not at the same ground potential.

Ground ring should be at a depth below the surface of the earth of not less than _______ ft

The copper conductor not smaller than #___ AWG used as ground ring

____________ is the Conducting connection by which an electrical circuit or equipment is connected to the earth or to some conducting body of relatively large extent that serves in place of the earth

Sinusoidal component of a periodic wave having a frequency that is an integral multiple of the fundamental frequency is the ________