Which of the following properties of a fluid is responsible for offering resistance to shear ?

Related Mcqs:

1. Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?

   A. A, C, D
   B. B, D, E
   C. A, B, E
   D. A, D, E

2. The rate of shear versus the shear stress curves are time dependent for _____________ fluid?

   A. Thixotropic
   B. Rheopectic
   C. Both A. & B.
   D. Neither A. nor B.

3. Fluid resistance to shear depends upon its_______________?

   A. Rate of transfer of molecular momentum
   B. Cohesion
   C. Both A. and B.
   D. Neither A. nor B.

4. As per Newton’s law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to (where, μ = fluid viscosity) ?

   A. 1/μ
   B. μ
   C. μ2
   D. 1/μ2

5. A fluid whose apparent viscosity increases with shear rate is termed as the _____________ fluid?

   A. Newtonian
   B. Viscous
   C. Dilatant
   D. Non-viscous

6. A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an _____________ fluid?

   A. Newtonian
   B. Non-Newtonian
   C. Ideal
   D. Incompressible

7. The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?

   A. Δp
   B. 2Δp
   C. Δp2
   D. Δp/2

8. In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?

   A. Rotational
   B. Unsteady
   C. Turbulent
   D. Non-uniform

9. ____________ flow means the flow of incompressible fluid with no shear ?

   A. Potential
   B. Streamline
   C. Creep
   D. Boundary layer

10. Shear stress in a fluid flowing in a round pipe_________________?

    A. Varies parabolically across the cross-section
    B. Remains constant over the cross-section
    C. Is zero at the centre and varies linearly with the radius
    D. Is zero at the wall and increases linearly to the centre