Technician a Says a Pulse-Width Modulation of 50% Means the Valve

question 70

Multiple Choice

Technician A says a pulse-width modulation of 50% means the valve is energized 50% of the time and de-energized 50% of the time. Technician B says if an EPC pulse-width modulation value is 25%, that means that line pressure is increased by 25%. Who is correct?

• A) Technician A
• B) Technician B
• C) Both A and B
• D) Neither A nor B

Compare the availability and sustainability of various renewable and perpetual energy resources.

Grasp the concept of net energy in the context of renewable vs. nonrenewable resources.

Understand the role of solar energy in commercial energy.

Evaluate policies and practices for a sustainable energy future.

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Definitions:

Positive Balance

A financial situation where income exceeds expenses or assets surpass liabilities, often considered a sign of financial health.

International Trade

The exchange of goods, services, and capital between countries or territories.

20th Century

Refers to the period from January 1, 1901, to December 31, 2000, marking the twentieth century of the Gregorian calendar.

Japanese Economic System

A mixed economic system characterized by a combination of free-market principles and significant government intervention, as well as emphasis on consensus and cooperation among industrial sectors.