Top 550+ Solved Fluid Mechanics and Hydraulic Machines MCQ Questions Answer
Q. The magnitude of the buoyant force can be determined by
a. Newton’s second law of motion
b. Archimedes’ principle
c. Principle of moments
d. None of the above.
Q. When a body is immersed in a fluid, partially or completely, the force of buoyancy is equal to
a. The weight of the body
b. The weight of the fluid displaced by the body
c. The weight of the volume of the fluid equal to the volume of body
d. None of the above.
Q. The point of application of the force of buoyancy on the body is known as
a. Centre of gravity
b. Centre of buoyancy
c. Metacenter
d. None of the above.
Q. A floating body is in stable equilibrium when
a. The metacentre is below its centre of gravity
b. The metacentre is above its centre of gravity
c. The metacentric height is zero.
d. Its centre of gravity is below the centre of buoyancy.
Q. An ice-cube is floating in glass of water. As the cube melts the water level
a. Remain constant
b. Falls
c. Rises
d. None of the above.
Q. Metacentric height can be determined by
a. Only analytical method
b. Only experimental method
c. Both (a) and (b)
d. None of the above.
Q. If a body does not return to its original position from the slightly displaced angular position and heels farther away, when given a small angular displacement; such an equilibrium is called
a. Stable equilibrium
b. Unstable equilibrium
c. Neutral equilibrium
d. Any of the above
Q. The motion of fluid particles may be described by which of the following methods?
a. Langrangian method
b. Eulerain method
c. Both (a) and (b)
d. None of the above.
Q. In which of the following methods, the observer concentrates on a point in the fluid system?
a. Langrangian method
b. Eulerian method
c. Any of the above
d. None of the above.
Q. Normal acceleration in fluid-flow situation exists only when
a. The flow is unsteady
b. The flow is two-dimensional
c. The streamlines are straight and parallel
d. The streamlines are curve
Q. In a steady flow the velocity
a. Does not change from place to place
b. At a given point does not change with time
c. May change its direction but the magnitude remains unchanged
d. None of the above.
Q. The flow in a pipe whose valve is being opened or closed gradually is an example of
a. Steady flow
b. Unsteady flow
c. Rotational flow
d. Compressible flow.
Q. The type of flow in which the velocity at any given time does not change with respect to space is called
a. Steady flow
b. Compressible flow
c. Uniform flow
d. Rotational flow.
Q. Flow in a pipe where average flow parameters are considered for analysis is an example of
a. Incompressible flow
b. One-dimensional flow
c. Two-dimensional flow
d. Three-dimensional flow.