Section: Fluid Mechanics | Marks: 2
An orifice plate of $60\text{ mm}$ diameter and discharge coefficient $0.6$ is used for measuring the flow rate of air ($\rho = 1.2\text{ kg/m}^3$, $\mu = 1.8 \times 10^{-5}\text{ kg m}^{-1}\text{s}^{-1}$) through a pipe of $100\text{ mm}$ diameter. A manometer (with water as the working liquid) connected across the orifice plate reads $180\text{ mm}$. The air flow rate is approximately equal to
- A. $0.3\text{ m}^3\text{/s}$
- B. $0.1\text{ m}^3\text{/s}$
- C. $0.01\text{ m}^3\text{/s}$
- D. $0.003\text{ m}^3\text{/s}$