Which Control Is a Back-Up Control Designed to Operate When

question 10

Multiple Choice

Which control is a back-up control designed to operate when other controls fail?

• A)high-limit control
• B)aquastat
• C)pressure relief valve
• D)low-water fuel cut-off

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Definitions:

Ammonia

A compound of nitrogen and hydrogen with the formula NH3, used in industry and biological systems, notably as a waste product of metabolism in many organisms.

Freshwater Fish

Fish species that spend most or all of their lives in freshwater habitats such as rivers and lakes, contrasting with saltwater fish found in the ocean.

Main Point

The central or most important idea in a discussion, argument, or narrative.

Water Entry

The process of water moving into a particular space or material, often related to hydrodynamics or soil science.