Which coefficient affects flow velocity in pipes?

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Multiple Choice

Which coefficient affects flow velocity in pipes?

Explanation:
In pipe flow, how fast water moves is governed by friction against the interior walls. That friction is captured by the C-factor, the pipe’s roughness coefficient. A higher C-factor indicates a smoother surface, which means less friction and less head loss, so water can achieve a higher velocity for the same driving force. A lower C-factor means rougher walls, more friction, and slower flow. The other terms aren’t coefficients that describe flow resistance: a lateral is a side branch, and pathogens or waterborne diseases are contaminants, not factors that set flow velocity.

In pipe flow, how fast water moves is governed by friction against the interior walls. That friction is captured by the C-factor, the pipe’s roughness coefficient. A higher C-factor indicates a smoother surface, which means less friction and less head loss, so water can achieve a higher velocity for the same driving force. A lower C-factor means rougher walls, more friction, and slower flow. The other terms aren’t coefficients that describe flow resistance: a lateral is a side branch, and pathogens or waterborne diseases are contaminants, not factors that set flow velocity.

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