I am using an infinitesimally small element of fluid moving along wit – McqOptions

MCQOPTIONS

1.	I am using an infinitesimally small element of fluid moving along with the flow as my model. What is the acceleration of this model in x-direction?
A.	\(a_x=\frac{D\vec{V}}{Dt}\)
B.	\(a_x=\frac{\partial \vec{V}}{\partial t}\)
C.	\(a_x=\frac{Du}{Dt}\)
D.	\(a_x=\frac{\partial u}{\partial t}\)
Answer» D. \(a_x=\frac{\partial u}{\partial t}\)

Discussion

No Comment Found

Related MCQs

Which of these terms represent convection in the momentum equation?
The momentum equation is \( \rho\frac{Du}{Dt}=-\frac{\partial p}{\partial x}+\frac{\partial \tau_{xx}}{\partial x}+\frac{\partial \tau_{yx}}{\partial y}+\frac{\partial \tau_{zx}}{\partial z}+\rho f_x\). Which of these statements about sign convention can be inferred from this equation?
I am using an infinitesimally small element of fluid moving along with the flow as my model. What is the acceleration of this model in x-direction?
The source term in the momentum equation is ________
The physical property Φ of the general transport equation is replaced by ________ to get momentum equation.
Consider the element shown in the diagram. In diagram,p → pressure\(p+\frac{\Delta p}{\Delta x}dx=p+\frac{\partial p}{\partial x}dx\) dx, day, dz → dimensions in x, y and z directions What is the net pressure force in x direction?
Consider an element shown below. S is the source term. If gravitational force is the only force acting on this element. Which of these following is correct?
What is the physical principle behind momentum equation?