MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
A vector can always have_____________ |
| A. | Only one component along any of the axis |
| B. | Only two components along any of the axis |
| C. | Only three components along any of the axis |
| D. | A unit vector along the direction perpendicular to its direction |
| Answer» D. A unit vector along the direction perpendicular to its direction | |
| 2. |
Which is true for the vector provided the only position coordinates given? |
| A. | (Final position coordinates + initial positions coordinates) gives the vector form of the vector |
| B. | (Final position coordinates initial positions coordinates) gives the vector form of the vector |
| C. | (Initial positions coordinates Final position coordinates) gives the vector form of the vector |
| D. | (Initial positions coordinates + Final position coordinates) gives the vector form of the vector |
| Answer» C. (Initial positions coordinates Final position coordinates) gives the vector form of the vector | |
| 3. |
Three vectors emerging from a point are always in a single plane. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Two vectors emerging from a point are always in a single plane. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The value cos-1(-3/7) + cos-1(2/7) + cos-1(6/7) is ____________ |
| A. | 215.4 |
| B. | 273.4 |
| C. | 188.4 |
| D. | 219.4 |
| Answer» E. | |
| 6. |
A force vector is along 4i 4k direction and has a magnitude 100N and another force vector is along 4i +2j -4k and has a magnitude of 120N. What is the resultant of both forces? |
| A. | 80i + 40j 80k N |
| B. | 80i 40j 80k N |
| C. | 151i + 40j 80k N |
| D. | 151i+ 40j 151k N |
| Answer» E. | |
| 7. |
What is the magnitude of the vector, 12i 8j 24k? |
| A. | 18 |
| B. | 28 |
| C. | 38 |
| D. | 48 |
| Answer» C. 38 | |
| 8. |
Express the vector in the Cartesian Form, if the angle made by it with y and z axis is 60 and 45 respectively. Also, it makes an angle of with the x-axis. The magnitude of the force is 200N. |
| A. | 100i + 100j + 141.4k N |
| B. | 100i 100j + 141.4k N |
| C. | 100i + 100j 141.4k N |
| D. | 100i 100j 141.4k N |
| Answer» B. 100i 100j + 141.4k N | |