Fluid Mechanics - Study Mode

[#461] Pascal's law is valid, only when the fluid is
Correct Answer

(B) At rest

Explanation

Solution: Pascal's law states that the pressure applied to a confined fluid is transmitted undiminished in all directions throughout the fluid. This law is only valid when the fluid is at rest because any motion would introduce additional forces such as viscosity and turbulence. A frictionless fluid in motion would not follow Pascal's law due to the influence of dynamic pressure changes.

[#462] Friction factor for a hydraulically smooth pipe at N Re = 2100 is f 1 . If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of N Re , will
Correct Answer

(A) Increase

[#463] Two piping system are said to be equivalent, when the __________ are same.
Correct Answer

(A) Fluid flow rate & friction loss

[#464] The pressure at a point in a fluid is not the same in all directions, when the fluid is viscous and
Correct Answer

(A) Moving

[#465] In fluid flow, the stagnation point is defined as a point, where the __________ is zero.
Correct Answer

(A) Flow velocity