Hydraulics and fluid mechanics MCQ with Answers

Hydraulics and fluid mechanics MCQ with Answers

106) The specific weight of sea water is __________ that of pure water.

Answer is:

more than

107) If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, The body is said to be in __________ equilibrium.

Answer is:

neutral

108) The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called

Answer is:

Newton's law of resistance

109) The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

Answer is:

1/2 depth

110) A flow is called sub-sonic, if the Mach number is

Answer is:

less than unity

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