A Wye-Delta Transformer Has a Turns Ratio of 2:1

question 21

Multiple Choice

A wye-delta transformer has a turns ratio of 2:1. It has a secondary line voltage of 480 V. The secondary is connected to a wye-connected three-phase resistive load of 50 Ω in each phase. What is the current flow is in each load resistor?

• A) 1.6 A
• B) 2.8 A
• C) 4.77 A
• D) 5.54 A

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Definitions:

Excited State

A condition of an atom, molecule, or nucleus in which it possesses more energy than its ground state.

Electron

A subatomic particle with a negative charge, found in all atoms and acting as the primary carrier of electricity in solids.

Photon

A quantum of electromagnetic radiation that embodies the concept of light as both a particle and a wave.

Electron

A subatomic particle with a negative charge found in all atoms, contributing to electricity.