state gov TSPSC Polytechnic Lecturer Mock Test 2022 Fluid Mechanics Fluid Kinematics Continuity Equation
स्थिर प्रवाह के एक असंपीड्य तरल के तीन आयामी प्रवाह की निरंतरता का सामान्य समीकरण क्या है?
1
\(\frac{{\partial u}}{{\partial x}} + \frac{{\partial v}}{{\partial y}} + \frac{{\partial w}}{{\partial z}} = 0\)
2
\(\frac{{\partial u}}{{\partial x}} = \frac{{\partial v}}{{\partial y}} = \frac{{\partial w}}{{\partial z}} = 0\)
3
\(\frac{{\partial u}}{{\partial x}} + \frac{{\partial v}}{{\partial y}} + \frac{{\partial w}}{{\partial z}} = 1\)
4
\(\frac{{\partial u}}{{\partial x}} + \frac{{\partial v}}{{\partial y}} + \frac{{\partial w}}{{\partial z}} = u.v.w\)