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How do you get two different voltages using the delta - star connection?
A star connection is where the three phase nonpolarities are tied to a single point, and very often grounded. A delta connection is where the nonpolarity of one phase is tied to the polarity of another phase, forming a greek delta shape. If measuring from polarity to nonpolarity on a single phase, in the star formation you are looking at L-N voltages; in the delta connection, you are looking at L-L voltages (L-N voltages * square root of three).
How voltage is reduced on a star connection?
In a star (or wye) connection, the line voltage is reduced compared to the phase voltage because the phase voltages are connected to a common neutral point. Each phase voltage is equal to the line voltage divided by the square root of three (approximately 0.577 times the line voltage). This configuration allows for a balanced load and provides a stable voltage supply, making it suitable for various applications in three-phase systems. Additionally, this setup helps to minimize the risk of voltage imbalances in the system.
Why is star connection used in a three phase transformer?
The power of all three phases can be transmitted on three conductors.A star connection, as opposed to a delta, provides a grounding reference. Also, for ground faults on the secondary (assuming no delta third winding, or source third winding) will be a direct ratio similar to phase faults, instead of 57%. Another reason is to avoid the inherent phase shift involved in a delta/star configured transformer.Another AnswerA 'star-connected' secondary is the standard European connection for a three-phase distribution transformer, as it provides a line voltage of 400 V together with a phase voltage (i.e. line to neutral) of 230 V.
What is the difference between a phase to ground connection and a grounded wye connection?
A 'grounded-wye' connection describes a wye-connected supply, whose star-point (or common point) is grounded. This is essential in order to ensure stable phase voltages. I'm not sure what you mean by a 'grounded-phase' connection; if you mean a 'grounded-line' connection, then this is a short-circuit to ground from a line conductor.
Where do you use star-star connection in electrical system?
i think its use for 3 phase connection.
Is a star more stable in the main sequence phase or in the giant phase?
A star is generally more stable during its main sequence phase. In this phase, it achieves a balance between the gravitational forces pulling inward and the nuclear fusion reactions pushing outward, allowing for a long, stable period of energy production. In contrast, during the giant phase, the star undergoes significant changes in its core and outer layers, leading to instability and variability in brightness. Thus, the main sequence phase is characterized by a more stable and predictable state.
What is another name for ninja star?
Another name for ninja star is Shuriken
Another name for the northern star?
Another name for the northern star people is Polaris
What 7 stages are in the life of a star?
Nebula - a cloud of gas and dust in space. Protostar - a contracting cloud of gas and dust with increasing temperature and pressure. Main Sequence Star - a stable phase where a star fuses hydrogen into helium in its core. Red Giant - a phase where a star expands and cools after exhausting its hydrogen fuel. Helium Burning - a phase where helium fuses into heavier elements in the core. Planetary Nebula - a phase where a star sheds its outer layers into space. White Dwarf - a hot, dense remnant of a star that has burned out.
What is the name for the portion of a star's life cycle when it uses hydrogen for fuel?
The portion of a star's life cycle when it uses hydrogen for fuel is called the main sequence stage. During this stage, the star fuses hydrogen to form helium in its core, releasing energy in the process. This is the longest and most stable stage in a star's life.
What is another name for an evening star especially Venus?
Another name for Venus as an evening star is the "Evening Star." This is due to its brightness and visibility in the sky during the evening hours.
What is the second nd longest stage in the life of a star?
The second longest stage in the life of a star is the main sequence phase. During this stage, which can last billions of years, a star fuses hydrogen into helium in its core, generating energy that balances gravitational collapse. This phase represents a stable period where the star maintains its size and temperature, allowing it to shine steadily. After exhausting its hydrogen fuel, a star will transition to later stages such as the red giant phase.
Identify what kind of a star is the sun?
The sun is a G-type main-sequence star, also known as a yellow dwarf star. It is in a stable phase of its life cycle, converting hydrogen into helium through nuclear fusion in its core. The sun's spectral classification is G2V.
Another name for meteor?
A "shooting star" or a "falling star".
Why is star another name for the sun?
because the sun is the star
What is another name for Star Wars?
There is no other name for Star Wars. It's just STAR WARS.
What is another name for a flaming ball of gas?
a star is a flaming ball of gas.
