10 Quiz 1-Fluid Mechanics Student ID Serial Name No. Part 1: Choose the correct answer: (2.5 Marks) 1) The constant of proportionality of stress and rate of shearing strain is called 2.5 absolute viscosity ii) kinematic viscosity iii) mass density iv)specific gravity 2) The density is defined to be 1) the volume per unit mass of material ii) the weight per unit volume it) mass x gravity iv) mass per unit volume of material 3) No-slip condition means the boundary is porous ii) the fluid moves beside the boundary iil) the fluid "sticks" to the solid boundaries iv) the fluid have a relative velocity with respect to the boundary 4) If the characteristics of the fluid depend only on coordinates then the motion is 1) uniform il) steady iii) unsteady iv) 1), 11) together 5) IfT(x, t) be a given scalar or tensor function of spatial coordinates (X1, X2, X3) and time t then y(x, t)dV equals ar(x.) i) dV + Ssc T(v xn)ds ii) Svim T(v.nds DT(x) iii) dv + Ssc 7(v.n)ds iv) T(v.n)ds Dr. Sve at ST(xt) dv + Ssan at DE Sve Svc ar(x.) at dv + Ssc