Hydraulics and fluid mechanics questions with answers
211 multiple-choice questions. Open any question for its answer and explanation.
- Thee horizontal component of buoyant force is
- Normal depth in open channel flow is the depth of flow corresponding to
- Metacentric height is given as the distance between
- The theoretical value of coefficient of contraction of a sharp edged orifice is
- Separation of flow occurs when
- Two dimensional flow occurs when
- Uniform flow occurs when
- Surface tension has the units of
- The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is
- When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies
- The density of water is 1000 kg/m3 at
- Which of the following is demensionless
- A large Roynold number is indication of
- To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
- The peoperty by virtue of which a liquid opposes relative motion between its different layers is called
- Ay between two stream lines represents
- The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)
- The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is
- The Prartdtl mixing length is
- The discharge through a V- notch varies as (where H is head)
- The units of viscosity are
- If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is
- When a body floating in a liquid, is displaced slightly, it oscillates about
- The normal stress is same in all directions at a point in a fluid
- The surface tension of mercury at normal temperature compared to that of water is