To Measure the Activity of the Human Brain During Certain

question 74

Multiple Choice

To measure the activity of the human brain during certain thought processes, a short-lived radioactive sugar is injected in the carotid artery and is utilized by those cells that are most active. This shows up on a PET scan and demonstrates the detection of

• A) ionic bonds.
• B) high levels of radiation.
• C) covalent bonds.
• D) neutrons.
• E) isotopes.

---

Definitions:

Pure Reactive Load

An electrical load that consumes reactive power only, with a power factor of zero, meaning it does not dissipate real power.

Three-Phase Load

An electrical load operating with three phases of alternating current, providing more consistent, balanced power delivery.

VARs

Volt-Ampere Reactive, a unit of reactive power in an AC electrical power system.

Three-Phase Connection

A method of electrical connection that uses three alternating currents of the same frequency and amplitude but with phases offset by one third of a cycle.