MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Bar with cross-sectional area of 0.05m2 is subjected to load of 2000kg, find the stress on the bar in terms of MPa? |
| A. | 392000 |
| B. | 40000 |
| C. | 0.040 |
| D. | 0.392 |
| Answer» E. | |
| 2. |
True stress-strain curve always lies above the engineering stress-strain curve. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Transformation of stress along the anticlockwise direction is given by the equation: x = ( x+ y)/2+( x- y)/2 cos2 + xysin2 |
| A. | nGiven that the principal stresses are 5Y & 9Y and shear stress is Y. If a plane is at 45 degrees anticlockwise from principal plane, find the value of the normal stress? |
| B. | 4Y |
| C. | 5Y |
| D. | 8Y |
| E. | 10Y |
| Answer» D. 8Y | |
| 4. |
Find the value of shear stress acting on the body, if the principal normal stresses are 70MPa and 60 MPa. The angle of inclination is 30 degrees? |
| A. | 17.32 MPa |
| B. | 2.88 MPa |
| C. | 10 MPa |
| D. | 15 MPa |
| Answer» C. 10 MPa | |
| 5. |
A wedge shape body is under stress with principal stresses being x=25MPa and y=20MPa. At a certain angle , the components of stresses are resolved into 1 & 2, where both 1 & 2 are normal to each other. If the value of 1=18MPa, find the value of 2? |
| A. | 25MPa |
| B. | 20MPa |
| C. | 27MPa |
| D. | 18MPa |
| Answer» D. 18MPa | |
| 6. |
According to the sign convention for shear stress, positive shear stress is shown in diagram _____________ |
| A. | <a href="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5a.png"><img alt="The sign convention for shear stress positive shear stress is shown - option a" class="alignnone size-full wp-image-265189" height="207" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5a.png" width="266"/></a> |
| B. | <a href="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5b.png"><img alt="The sign convention for shear stress positive shear stress is shown - option b" class="alignnone size-full wp-image-265188" height="190" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5b.png" width="220"/></a> |
| C. | <a href="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5c.png"><img alt="The sign convention for shear stress positive shear stress is shown - option c" class="alignnone size-full wp-image-265187" height="187" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5c.png" width="222"/></a> |
| D. | <a href="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5d.png"><img alt="The sign convention for shear stress positive shear stress is shown - option d" class="alignnone size-full wp-image-265186" height="182" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5d.png" width="218"/></a> |
| Answer» B. <a href="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5b.png"><img alt="The sign convention for shear stress positive shear stress is shown - option b" class="alignnone size-full wp-image-265188" height="190" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-elastic-behaviour-stress-description-point-q5b.png" width="220"/></a> | |
| 7. |
Plane stress is defined as ________ |
| A. | stress in one principal direction is 0 |
| B. | stresses in two principal directions are 0 |
| C. | strain in one principal direction is 0 |
| D. | strain in two principal directions are 0 |
| Answer» B. stresses in two principal directions are 0 | |
| 8. |
How many unknowns are required to establish the state of stress at any given point in 3-dimension? |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 12 |
| Answer» D. 12 | |
| 9. |
Hooke s law is obeyed till _____________ in stress-strain curve. |
| A. | propositional limit point |
| B. | yield point |
| C. | tensile Strength Point |
| D. | failure point |
| Answer» B. yield point | |