Civil Engineering  Hydraulics
Exercise :: Hydraulics  Section 1
41. 
The horizontal component of the force on a curved surface is equal to 
A. 
weight of liquid vertically below the curved surface  B. 
force on a vetical projection of the curved surface  C. 
product of pressure at its centroid and the area  D. 
weight of liquid retained by the curved area. 
Answer: Option B
Explanation:

42. 
The radius of gyration of the water line of a floating ship is 4 m and its metacentric height is 72.5 cm. The period of oscillation of the ship, is 
Answer: Option C
Explanation:

43. 
A pipe consisting of several pipes of varying diameters and lengths, may be replaced by an equivalent pipe of diameter D of length 
Answer: Option C
Explanation:

44. 
The Empirical formula for discharge over large rectangular weirs, is known as 
A. 
Francis formula  B. 
Bazin formula  C. 
Rehbook formula  D. 
Kutter's formula. 
Answer: Option B
Explanation:

45. 
The diameter (d) of a nozzle fixed at the end of a pipe (diameter D, length L) for maximum energy, is 
Answer: Option C
Explanation:
