Commercial Line Voltages Are Usually Square Waves at a Frequency

question 66

True/False

Commercial line voltages are usually square waves at a frequency of 60 Hz.

---

Definitions:

Seconal

A brand name for secobarbital, a barbiturate drug used as a sedative and hypnotic medication.

Morphine

A powerful opiate analgesic drug derived from the opium poppy, used to relieve severe pain.

Narcolepsy

A sleep disorder characterized by uncontrollable episodes of falling asleep during the daytime.

Sleep Terror

A sleep disorder causing feelings of panic or dread, typically occurring during the first hours of stage 3-4 non-REM sleep and often remembered only partially.