51. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
52. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
53. When a body is placed over a liquid, it will float if
54. The property by virtue of which a liquid opposes relative motion between its different layers is called
55. The product of mass and acceleration of flowing liquid is called
56. Which of the following turbine is preferred for 0 to 25 m head of water?
57. The force present in a moving liquid is
58. The flow in a pipe or channel is said to be non-uniform when
59. The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
60. Which of the following instrument can be used for measuring speed of an aeroplane?
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