NR 329 induced voltage and multiple grounds Qs with 100% accurate solutions + rationales 2026 - Chamberlain

The most common accidents, other than those caused by direct contact with energized lines, are caused by induction and ? .

the use of multiple grounds

When a line is charged with an induced voltage, current will flow ? .

When the line is grounded at 2 points

The form of induced voltage caused by wind or atmospheric conditions is ? .

Static charge

A form of induced voltage where air is the dielectric separating the conductive surfaces is ? .

capacitive coupling

The greater the distance that a deenergized line parallels an energized line, the greater the induced voltage or current.

True

When electrical circuits are in close proximity to each other, there exists the possibility that one circuit may induce a voltage into the adjacent circuit.

True

With electromagnetic-coupled lines, the magnetic field of the energized line couples to the isolated line, forming a(n) ? .

air core transformer

An energized and a deenergized transmission line share right of way for a distance. When terminal ground switches at each end of the deenergized line are closed, ? .

circulating current will flow through the deenergized line and earth

An energized and deenergized circuit share common structures. The deenergized circuit has bracket grounds installed on structures adjacent to the worksite. The circulating current flow will be predominantly limited by the ? resistance.

Earth

Energized and deenergized lines are in near proximity. Terminal ground switches are closed on both ends of the deenergized line. Protective grounds are to be placed at the worksite, several miles from the terminal switches. Upon installation of the worksite grounds, ? .

Select one:

a second current loop will be formed

induced voltage is a more common hazard to Qualified Electrical Workers than re-energization, and has resulted in more fatalities.

True

A line has an induced voltage due to capacitive coupling. At a single-point grounding location, the voltage is near zero. At distance from this connection point, the voltage ? .

rises as the distance increases

If a line is energized but not feeding a load or source, a current or electromagnetic field will surround the conductor.

False

When a step potential exists between a steel tower and high resistance earth, the tower can be mounted by using ? .

an insulated mat

The closer an energized line is to a deenergized line, the greater the charge buildup from capacitive coupling.

True

When using truck-mounted booms with non-insulated baskets during maintenance work, the problem of ? may be encountered.

multiple grounds

A line that is energized but has no connected load will have a ? field around the conductor.

voltage

If two power lines are close together and one line has either a voltage or electromagnetic field around it, that field will induce a charge in the adjacent line.

True

A worker is on an uninsulated truck-mounted platform. The truck is grounded at a point one span away from the line grounds. When the worker contacts a line conductor, he or she becomes a current path to earth.

True