Q. From following which equation is used to measure negative pressure in u-tube manometer (Solved)
1. s2h2 + s1h1
2. s2h2 - s1h1
3. - s2h2 + s1h1
4. - s2h2 - s1h1
- d. - s2h2 - s1h1
1. s2h2 + s1h1
2. s2h2 - s1h1
3. - s2h2 + s1h1
4. - s2h2 - s1h1