Unsteady State of Heat Flow Occurs in

question 20

Multiple Choice

Unsteady state of heat flow occurs in

• A)Flow of heat through furnace walls
• B)Flow of heat through insulated pipe with constant surface temperature
• C)Annealing of castings
• D)Flow of heat through refrigerator walls
• E)None of the above

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Definitions:

Magnesium

A chemical element (Mg) that is a vital mineral for the human body, involved in over 300 biochemical reactions.

Phosphorus

A chemical element with the symbol P and atomic number 15, essential for life, used in fertilizers, and present in bones, DNA, and ATP.

Parathormone

A hormone produced by the parathyroid glands that helps regulate calcium levels in the blood.

Calcium

An essential mineral for human health, crucial for bone and teeth formation, blood clotting, and muscle function.