41. Discharge of a centrifugal pump is (where N = Speed of the pump impeller)
42. A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is
43. When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.
44. The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as
45. The overall efficiency for a Pelton wheel lies between
46. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid and H = Height of liquid)
47. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are
48. Which of the following manometer has highest sensitivity?
49. The viscosity of a liquid __________ its rate of flow through a hole in a vessel.
50. A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is
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