Case-Based Critical Thinking Questions Case 16-1 Jack Is a Computer

question 56

Multiple Choice

Case-Based Critical Thinking Questions Case 16-1 Jack is a computer programmer who spends most of the day at his desk. Recently, he visited the doctor to get advice about his persistent eyestrain and aching back. To combat his eyestrain, Jack's doctor correctly advises him to ____.

• A) use a footrest
• B) use a lower screen resolution
• C) turn down the volume when using headphones
• D) use a light touch on the keyboard

---

Definitions:

Center-Tapped Transformer

A transformer that has a wire connected to the electric midpoint of its winding. Generally, the secondary winding is tapped.

High Leg

A certain type of three-phase power connection that exhibits a higher voltage on one leg when measured to ground than on the other legs.

Output Power

The amount of power, typically measured in watts, that a device, system, or process delivers to its load.

Open Delta

An open delta connection refers to a method of transformer connection used in electrical systems that employs two transformers to create a three-phase supply with a smaller capacity than a full delta connection.