Question

Consider the following statements:Which of the below statements is/are correct?

1. Piezometer is used to measure small variation of pressure above or below ambient pressure.
2. Thixotropic fluid exhibits decrease in viscosity with time.

• A. ii only
• B. i, ii
• C. i only
• D. All

Answer 1

Answer:

A. ii only

Statement 2 is correct while statement 1 is incorrect. Piezometer is the simplest form of manometer for measuring gauge pressures. It measures only the gauge pressures. It would not work for negative gauge pressures, because air would flow into the container through the tube.. Thixotropic fluids require decreasing stress and exhibit a decrease in viscosity with time.