Wye-Delta Transformation

In a Wye to Delta transformation, the resistance of the Delta equivalent is:

• 1/3 times the resistance of the Wye configuration

• The same as the resistance of the Wye configuration

• 3 times the resistance of the Wye configuration

• Square root of 3​ times the resistance of the Wye configuration

The transformation from Wye to Delta is also known as:

• Y-Δ transformation

• Y-D transformation

• Delta-Y transformation

• Δ-Y transformation

Which of the following is true regarding balanced Wye and Delta configurations?

• They have the same phase current magnitude

• They have the same total power

• They have the same line current magnitude

• They have the same voltage across each branch

In a balanced Wye circuit, if the line voltage (V_L) is 120V, what is the phase voltage (V_Φ)?

The Y-Δ transformation is used to simplify complex circuits and make them easier to analyze. What type of circuits are typically transformed using this method?

• Magnetic circuits

• Series circuits

• Parallel circuit

• Power distribution networks

In a Delta configuration, the number of nodes is equal to

1. Which of the following statements is true for the Y-Δ transformation process?

• 1. It can only be applied to circuits with resistors

• 1. It involves mathematical equations to perform the transformation

• 1. It can be used for both balanced and unbalanced circuits

• 1. It can be used for both balanced and unbalanced circuits b) It is only applicable to DC circuits

11. Which configuration is preferred for high-voltage transmission lines due to its efficiency in power distribution?

• Wye

• 11. Delta

• 11. Both are equally efficient

• 11. Neither is efficient for high-voltage transmission

The Y-Δ transformation is particularly useful in situations involving

• Balanced three-phase systems

• High-frequency AC circuits

• Single-phase power distribution

• Low-frequency AC circuits

The Y-Δ transformation is most commonly applied in which type of circuits?

• Three-phase power systems

• Lighting circuits

• Parallel circuits

• Audio circuits