Q. ρV→. dS→ is positive when

(A) the mass flow is outward
(B) the mass flow is inward
(C) the mass flow is positive
(D) the mass flow is negative

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✅ Correct Answer: (A) the mass flow is outward

Explanation: ds→ always points outwards to the control volume. so, the product ρv→. ds→ is positive when the mass flow is outwards.

Published by Mr. Dubey ⭐ 109.99K Points at 19-Sep-2023 08:23 pm in Fluid Mechanics and Machinery

Explanation by: Mr. Dubey

ds→ always points outwards to the control volume. so, the product ρv→. ds→ is positive when the mass flow is outwards.

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