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GATE Exam Questions - Engineering

Q1:

If, for a fluid in motion, pressure at a point is same in all directions, then the fluid is :

A a real fluid

B a Newtonian fluid

C an ideal fluid

D a non-Newtonian fluid

ANS:C - an ideal fluid

Ideal fluid is one that is incompressible and has No Viscosity and Surface Tension. Because of these reasons, the pressure at a point is the same in all directions.