https://storage.googleapis.com/swayam-node1-production.appspot.com/assets/img/noc21_ch05/ch05A3.png You wish to calculate the velocity and pressure field for the laminar flow of water, at about 20 C, through the domain shown in Figure 1.

Q1). How many partial differential equations do we need to solve: a)1 b)2 c)3 d)4

Q2).If W = 0.04 m, H = 0.03 m and L = 1.5 m, inlet velocity for an inlet Reynolds number of 1000 would be about a)0.03 m/s b)0.3 m/s c)3 m/s d)10 m/s

Q3).The continuity equation for this case can be written as a) u/z+v/z+w/z=0 b) u/y+v/z+w/x=0 c)u/x+v/y+w/z=0 d) u/x+u/y+u/z=0

Q4).The momentum balance equation in the x-direction can be written as a) uu/x+vv/y+wu/z=1/p/x+/(2u/x2+2v/y2+2w/z2) b) uu/x+vu/y+wu/z=1/p/x+/(2u/x2+2v/y2+2w/z2) c) uu/x+vu/y+wu/z=1/p/x+/(2u/x2+2u/y2+2u/z2) d) None of the above

Q5). An appropriate boundary condition at plane D is (i) p/z=0 (ii) w/z=0 (iii) velocity = Vin (i) (ii) (iii) none of the three

Q6). Which of the following statements is true about pressure at the mid-point of plane C (i) pressure > pressure at inlet (ii) p/z=0 (iii) p/z = constant (i) (ii) (iii) none of the three Q7) Which of the following statements is true about velocity at the mid-point of plane B (i) w velocity > Vin (ii) w/z=0 (iii) w/z = constant (i) (ii) (iii) none of the three

Q8). Which of the following statements is valid for a Newtonian fluid: (i) Viscous stress vs strain relation is linear. (ii) Viscous stress is proportional to the local deformation rate

(iii) Viscosity is independent of shear stress. a)(i) & (ii) b)(ii) & (iii) c)(i) & (iii) d)(i), (ii) & (iii)

Q9).A fluid element in steady, laminar, fully developed flow of an incompressible fluid between two infinitely long and wide parallel plates undergoes which type of strain: (i) rotational (ii) extensional (iii) shear a)(i) & (ii) b)(ii) & (iii) c} (i) & (iii) d)(i), (ii) & (iii)

Q10).For fully developed flow, the steady state momentum balance equation reduces to a) 2w/y2=0 b)2w/x2+2w/y2=0 c)2u/x2+2v/y2=0 none of the three