Equation of continuity is expressed as:
Correct answer: B. A1V1 = A2V2
- A. A1V2 = A2V1
- B. A1V1 = A2V2
- C. A1H2 = A2H1
- D. A1H1 = A2H2
Explanation
Option A: A1V2 = A2V1: This is the equation of continuity for fluid flow. It states that the mass flow rate through a control volume is constant. In other words, the amount of fluid that enters the control volume must equal the amount of fluid that leaves the control volume. Option B: The equation of continuity is expressed as A1V1 = A2V2. This equation states that the mass flow rate through a control volume is constant. In other words, the amount of fluid that enters the control volume must equal the amount of fluid that leaves the control volume. Option C: A1H2 = A2H1: This is the equation of continuity for heat transfer. It states that the heat flow rate through a control volume is constant. In other words, the amount of heat that enters the control volume must equal the amount of heat that leaves the control volume. Option D: A1H1 = A2H2: This is not the equation of continuity for heat transfer. It states that the product of the cross-sectional area and the heat transfer coefficient is constant. This is only true for steady-state heat transfer, which means that the temperature of the fluid does not change.
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