Question

Which of the following is NOT a factor that influences health and safety?
Select one:
a. Superstition factors e.g. walking under ladders, black cats etc
b.
Human factors e.g error or haste
c. Occupational factors e.g. work risks
d. Environmental factors e.g. workplace noise

Answer 1

Explanation:

a venturi meter in a horizontal 300 mm diam water pipe has throat diam of 100 mm and a discharged coefficient of 0.98. A mercury U-tube was used to measure the difference of head between the pipe inlet and the throat at points 0.6 m apart. if the mercury guage reading was 750 mm, the flow through the pipe in dm³/s. the connection to the U-tube are filled with water. If the water had been placed vertically with the flow upward, what would have been the guage reading