Consider the following statements regarding flow measurement through pipes :
1. The reduction diameter causes increase. in constriction velocity to
2. High velocities in constriction cause low pressures in the system.
3. The reduction in constriction diameter enables lesser accuracy in its measurement.
Which of the above statements is/are correct :
1
1 and 2
2
2 and 3
3
2 only
4
1 and 3