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Académie
Sheet Metal
Sheet Metal Worker Red Seal Certification
Dampers & Airflow Control
Vérification des connaissances
Dampers & Airflow Control
Vérification des connaissances
Vérification des connaissances
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Why do opposed-blade dampers provide more linear airflow control than parallel-blade dampers?
A
They operate at higher pressure ratings
B
They are always motorized, allowing finer position adjustments
C
They use fewer blades, reducing turbulence
D
Adjacent blades rotate in opposite directions, creating uniform resistance across the duct
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