Where do deltas occur?

Answer 1

A delta is formed where a large river enters the sea (where there is a relatively small tidal range) or a standing body of water.

• You could most likely find a Delta near the rivers mouth
• also where there is small tidal range

Answer 2

Most three-phase power transmission circuits above LV (that is, more than 1000 volts), are three-phase three-wire circuits with a delta connection to the Transformers at each end.

Additional Answer

In North America (but not in Europe), three-phase delta-connected secondary windings are used for transformers supplying commercial/residential properties. These allow the provision of three-phase supplies (240-V line voltage) together with a split-phase (240/120-V) single-phase supply.

To achieve this, one of the secondary phase windings is centre tapped and grounded (earthed), and provides the neutral for the split-phase system, and the opposite ends of the same phase winding then provides 120 V measured with respect to the neutral.

Answer 3

A delta forms the the mouth of a river that is carrying a silt burden.

Probably named after the Greek capital letter Delta.

Answer 4

Plants and animals. It depends on how much water and trees there are in the delta. A delta usually has lots of water.

Answer 5

Usually at the mouths of rivers.

Answer 6

near the sea.