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Mechanical Engineering Objective Questions { Hydraulic Fluid Mechanics }



162. In a free vortex motion, the radial component of velocity everywhere is
A.Maximum
B.Minimum
C.Zero
D.Non-zero and finite
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163. In a forced vortex, the velocity of flow everywhere within the fluid is
A.Maximum
B.Minimum
C.Zero
D.Non-zero finite
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164. The region between the separation streamline and the boundary surface of the solid body is known as
A.Wake
B.Drag
C.KC) lift
D.Boundary layer
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165. For hypersonic flow, the Mach number is
A.Unity
B.Greater than unity
C.Greater than 2
D.Greater than 4
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166. The upper surface of a weir over which water flows is known is
A.Crest
B.Nappe
C.Sill
D.Weir top
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167. Normal depth in open channel flow is the depth of flow corresponding to
A.Steady flow
B.Unsteady flow
C.Laminar flow
D.Uniform flow
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168. Velocity distribution in the turbulent 'boundary layer follows following law
A.Linear
B.Square
C.Parabola
D.Logarithmic
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