MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In the case of pure normal forces, shear stresses develop in all planes except the planes where normal stresses are maximum. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In the case of pure shear forces, normal stresses develop in all the planes except the planes where shear stresses are maximum. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
In 2-dimensional state of stress, shear stress maximum ( max) occurs on a plane halfway between the two principal planes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Determine the principal stress for the state of stress? ( begin{vmatrix}0 & -100 & 0 -100 & 200 & 0 -0 & 0 & -150 end{vmatrix} ) |
| A. | 1=100, 2=200, 3=-150 |
| B. | 1=-100, 2=-200, 3=-150 |
| C. | 1=241.42, 2=-41.42, 3=-150 |
| D. | 1=150, 2=41.42, 3=-241.42 |
| Answer» D. 1=150, 2=41.42, 3=-241.42 | |
| 5. |
If Two of the 3 principal stresses are zero, the state of stress is known as __________ |
| A. | cylindrical |
| B. | uniaxial |
| C. | spherical/hydrostatic |
| D. | triaxial |
| Answer» C. spherical/hydrostatic | |
| 6. |
The state of stress in 3-dimension is given by the following determinant, the coefficient of 2 is an invariant quantity which is equal to ________ ( begin{vmatrix} sigma- sigma x & - tau yx & - tau zx - tau xy & sigma- sigma y & - tau zy - tau xz & - tau yz & sigma- sigma z end{vmatrix} ) |
| A. | x+ y+ z |
| B. | x y+ y z+ z x- xy2- yz2- zx2 |
| C. | x y z+2 xy yz zx- x xy2 - y yz2 - z zx2 |
| D. | 1 |
| Answer» B. x y+ y z+ z x- xy2- yz2- zx2 | |
| 7. |
The three-dimensional state of stress consists of 3 unequal principal stresses acting on a point, this is called the triaxial state of stress. If all the three principal stresses are equal, the state of stress is known as __________ |
| A. | cylindrical |
| B. | uniaxial |
| C. | spherical/hydrostatic |
| D. | triaxial |
| Answer» D. triaxial | |
| 8. |
The 3-dimensional state of stress consists of 3 unequal principal stresses acting on a point, this is called the triaxial state of stress. If two of the three principal stresses are equal, the state of stress is known as __________ |
| A. | cylindrical |
| B. | uniaxial |
| C. | spherical/hydrostatic |
| D. | triaxial |
| Answer» B. uniaxial | |