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This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Mechanics knowledge and support exam preparation. Choose a topic below to get started.
1. |
The moment is the cross product of which two vectors in the calculations of the pivots and disks? |
A. | Force and Radius vectors |
B. | Radius and Force vectors |
C. | Force and Radius scalars |
D. | Radius and Force scalars |
Answer» C. Force and Radius scalars | |
2. |
In the calculations of the bearings, we often use vector math. So for those systems which of the following is true? |
A. | i x i =1 |
B. | j x i = -j |
C. | k x j = -i |
D. | k x k = 1 |
Answer» D. k x k = 1 | |
3. |
In the calculations involving the collar bearings and the pivot bearings, we use cross product. In that mathematically, for two vectors A and B of any magnitude, the cross product of both, i.e. AxB = given by: |
A. | |A||B|sin |
B. | |A||B| |
C. | |A||B|cos |
D. | |A||B|sin(180 + ) |
Answer» B. |A||B| | |
4. |
We first make equilibrium equations of the sections involving the collar bearings or pivots by considering all the three dimensional forces acting on the section chosen and then the free body diagram is made and solved. |
A. | The first part of the statement is false and other part is true |
B. | The first part of the statement is false and other part is false too |
C. | The first part of the statement is true and other part is false |
D. | The first part of the statement is true and other part is true too |
Answer» E. | |
5. |
The pivots are generally used in __________ |
A. | Belts |
B. | Columns |
C. | Beams |
D. | Machines |
Answer» E. | |