Discharge Through Spillways

Q. A discharge of $72m^3/s$ is to be allowed through siphon spillways of 2 m width and 75 cm depth with a working head of 8 m. The number of spillways to be provided will be (Take coefficient of discharge for the spillways = 0.64)

1. 2
2. 4
3. 6
4. 8

Q. For a saddle siphon, the maximum operative head is 6.25 m. The width and height of the throat of the siphon are 4 m and 2 m respectively. The coefficient of discharge is 0.90. How many units are required to pass a flood of 300 cumec?(Take g = 10 m/s${}^2$)

1. One
2. Two
3. Three
4. Four