Q1. What is the ratio of maximum velocity to average velocity, when the fluid is passing through two parallel plates and flow is laminar?
(A) 03/02/20
(B) 02/03/20
(C) 04/03/20
(D) 03/04/20

Q2. Re = Reynold’s number
(A) (Re / 32)
(B) (32 / Re)
(C) (Re / 16)
(D) (16 / Re)

Q3. the density of the fluid is low
(A) Both of these
(B) none of the above
(C) How should be the viscosity of the flowing fluid for laminar flow?
(D) viscosity of the fluid should be as low as possible, for laminar flow

Q4. In a steady, ideal flow of an incompressible fluid, total energy at any point of the fluid is always constant. This theorem is known as
(A) Euler’s equation of motion
(B) none of the above
(C) Navier-stockes equation of motion
(D) Euler’s theorem

Q5. When the net force acting on a fluid is the sum of only gravity force, pressure force and viscous force, the equation is called as
(A) Navier-stockes equation of motion
(B) Euler's equation of motion
(C) Reynold’s equation of motion
(D) None of these

Q6. The net force of an ideal flow is equal to the sum of nonzero values of
(A) fluid kinematics
(B) none of the above
(C) fluid dynamics
(D) pressure force and gravity force

Q7. The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at the point, is called as
(A) path line
(B) streak line
(C) filament line
(D) stream line

Q8. The actual path followed by a fluid particle as it moves during a period of time, is called as
(A) path line
(B) streak line
(C) filament line
(D) stream line

Q9. The rate of increase of velocity with respect to change in the position of fluid particle in a flow field is called as
(A) local acceleration
(B) temporal acceleration
(C) convective acceleration
(D) All of these

Q10. In which method of describing fluid motion, the observer remains stationary and observes changes in the fluid parameters at a particular point only?
(A) Lagrangian method
(B) Eulerian method
(C) Stationary method
(D) All of these

Q11. Which property of the fluid offers resistance to deformation under the action of shear force?
(A) density
(B) viscosity
(C) permeability
(D) specific gravity

Q12. The specific weight of the fluid depends upon
(A) gravitational acceleration
(B) mass density of the fluid
(C) both and
(D) none of the above

Q13. Inter molecular cohesive force in the fluids is
(A) less than that of the solids
(B) more than that of the solids
(C) equal to that of the solids
(D) unpredictable

Q14. Which branch of fluid mechanics deals with translation, rotation and deformation of the fluid element without considering the force and energy causing such motion is called as
(A) fluid dynamics
(B) fluid kinematics
(C) fluid kinetics
(D) hydraulics

Q15. Shear stress in static fluid is
(A) always zero
(B) always maximum
(C) between zero to maximum
(D) unpredictable

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