MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Finite Element Method knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider a system where a wall of a tank containing a hot liquid at a temperature T0, with an air stream of temperature T flows on the outside of the tank, maintaining the outside wall temperature of TL. What is the expression for boundary condition of the system? |
| A. | q=h(TL-T ) |
| B. | T=T |
| C. | T=TL |
| D. | TL-T |
| Answer» B. T=T | |
| 2. |
In a Heat Transfer problem, which option is used for interpolation of temperature inside a finite element? |
| A. | Natural coordinates |
| B. | Global coordinates |
| C. | Temperature gradients |
| D. | Shape functions |
| Answer» E. | |
| 3. |
For a two dimensional problem, the evaluation of boundary integrals amounts to evaluation of line integrals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The velocity field of a fluid flow is denoted by v=2xi+3j. Which option exactly describes the flow? |
| A. | Ideal |
| B. | Compressible |
| C. | Irrational |
| D. | Inviscid |
| Answer» C. Irrational | |
| 5. |
In a steady state heat conduction problem with a thermal conductivity of 22(W/(m*K)), for a typical element of mesh of linear triangular elements, what is the value of a in stiffness matrix,K=a* ( begin{pmatrix} |
| A. | n1&-1&0 -1 & 2 & -1 0 & -1 & 1 end{pmatrix} )? |
| B. | 11 |
| C. | 12 |
| D. | 10 |
| E. | 5.5 |
| Answer» B. 11 | |
| 6. |
In the below equation for steady-state heat transfer in plane systems, what does stands for? (k_x frac{ partial T}{ partial x}n_x+k_y frac{ partial T}{ partial y}n_y )+ (T-T )= ( hat{q} )n |
| A. | Convective heat transfer coefficient |
| B. | Thermal expansion |
| C. | Thermal conductivity |
| D. | Diffusivity |
| Answer» B. Thermal expansion | |
| 7. |
For a convective boundary, the natural boundary condition is a balance of energy transfer across the boundary due to conduction and/or convection. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
In steady state heat transfer finite element model [K+H]*{T}={Q}*{P} if convective boundary conditions are neglected then which option is applicable? |
| A. | K=0 |
| B. | H=0 |
| C. | Q=0 |
| D. | T=0 |
| Answer» C. Q=0 | |
| 9. |
If the finite element model shown below represents heat conduction in axisymmetric or plane geometries then which option is not true? (- frac{ partial}{ partial x}(a_{11} frac{ partial u}{ partial x}+a_{12} frac{ partial u}{ partial y})- frac{ partial}{ partial y}(a_{21} frac{ partial u}{ partial x}+a_{22} frac{ partial u}{ partial y}) ) +a00u-f=0 |
| A. | u is temperature |
| B. | a<sub>11</sub>, a<sub>22</sub> are conductivities in x, y directions |
| C. | f is internal heat generation |
| D. | a<sub>00</sub>=1 |
| Answer» E. | |