Venturimeter

Q. Water flows through a horizontal tube as shown in figure. If the difference of heights of water column in the vertical tubes is $4\text{cm}$, and the cross-sectional area $A_1$ and $A_2$ are $4{\text{cm}}^2$ and $2{\text{cm}}^2$ respectively, find the rate of flow of water across any section.
Take $g=9.8{\text{m/s}}^2,\sqrt{2613.33}=51.12$ for calculation.

1. $122.43{\text{cm}}^3/\text{s}$
2. $204.48{\text{cm}}^3/\text{s}$
3. $298.6{\text{cm}}^3/\text{s}$
4. $302.2{\text{cm}}^3/\text{s}$

Q. When the venturimeter is inclined, then for a given flow, it will show ________ reading.

1. same
2. more
3. less
4. none of these