Solved GATE Questions on Fluid Properties
Question 1. A static fluid can have
(A) Non-zero normal and shear stress
(B) Negative normal stress and zero shear stress
(C) Positive normal stress and zero shear stress
(D) Zero normal stress and non-zero shear stress
GATE-ME-2001
Hint 1. (Ans B)
Question 2. The S.I unit of kinematic viscosity (
) is
(A) 
(B) kg/m-sec
(C) 
(D) 
GATE-ME-2001
Hint 2. (Ans A)
Question 3. An incompressible fluid (kinematic viscosity, 
, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, then fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of bottom plate is
(A) 0.651
(B) 0.651
(C) 6.51
(D) 0.651
GATE-ME-2004
Hint 3. (B)
Given:
Shear stress,
Question 4. For a Newtonian fluid
(A) Shear stress is proportional to shear strain
(B) Rate of shear stress is proportional to shear strain
(C) Shear stress is proportional to rate of shear strain
(D) Rate of shear stress is proportional to rate of shear strain
GATE-ME-2006
Hint 4.(Ans C)
For a Newtonian fluid, shear stress is proportional to rate of shear strain.
Answer keys
1. (B) 2. (A) 3. (B) 4. (C)