Two Technicians Are Discussing Pulse Train Signals

question 9

Multiple Choice

Two technicians are discussing pulse train signals. Technician A says that a pulse train is a DC signal waveform that goes above and below zero volts. Technician B says that a pulse train is a DC voltage that turns on and off in a series of pulses and they do not go below zero. Which technician is correct?

• A) Technician A only
• B) Technician B only
• C) Both technicians A and B
• D) Neither technician A nor B

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Definitions:

Trade

Trade is the action of buying, selling, or exchanging goods and services between people, companies, or countries.

Competition

The rivalry among sellers trying to achieve goals such as increasing profits, market share, and sales volume by varying the elements of the marketing mix: price, product, promotion, and place.

Bulgaria

A country located in Southeast Europe known for its rich history, cultural heritage, and geographical diversity.

Invisible Hand

A term used by Adam Smith to describe the self-regulating nature of the marketplace.