Answer the following questions by referring to Example 8.4.
(a) If the water temperature is 20°C, what is the allowable (negative) pressure head before the onset of cavitation?
(b) Should the bend loss at the crown be included in the computations for determining the pressure head at the crown?
(c) The maximum difference between the upstream reservoir pool level and the siphon crown was stared to be approximately 8 m [Figure 8. 14 (a)] to prevent cavitation. Is this "rule of thumb applicable here?