### Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

- In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is
- According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
- The difference of pressure between the inside and outside of a liquid drop is
- Fluid is a substance that
- The line of action of the buoyant force acts through the
- A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of
- An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is
- The region between the separation streamline and the boundary surface of the solid body is known as
- Steady flow occurs when
- The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is

A.
the direction and magnitude of the velocity at all points are identical |

B.
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time |

C.
the magnitude and direction of the velocity do not change from point to point in the fluid |

D.
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane |