When Connecting Three Transformers for Three-Phase Use with a Delta

question 14

Multiple Choice

When connecting three transformers for three-phase use with a delta secondary, a voltage test should be done before closing the secondary. The correct voltage reading is _____.

• A) the rated secondary voltage value
• B) twice the rated secondary voltage value
• C) zero volts
• D) the sum of the three transformer primaries

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Definitions:

Flow Time

The total time it takes for a product to move through a production process, from start to finish.

Economies of Scale

Cost advantages obtained due to increased production scale, where the cost per unit of production decreases with larger volume.

Cycle Inventory

The inventory a company needs to meet its average sales demand between the arrival of stock replenishments.

Total Cost

The complete cost of production or providing a service, including fixed and variable costs.