MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
WHAT_IS_K.I??$ |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | ‚àû |
| Answer» C. -1 | |
| 2. |
155N?$ |
| A. | 257.1N |
| B. | 200N |
| C. | 175N |
| Answer» C. 175N | |
| 3. |
α = cos-1(A.B/AB). What is the range of α?$# |
| A. | 0˚<α<90˚ |
| B. | 0˚<α<180˚ |
| C. | 90˚<α<180C |
| D. | 0˚<α<45˚ |
| Answer» B. 0‚àö√Ñ‚àö‚àÇ<‚âà√≠¬¨¬±<180‚àö√Ñ‚àö‚àÇ | |
| 4. |
What is {(i.i) + (-i.j) + (-k.k) + (k.i)}.(Ai +Bj + Cz)?$ |
| A. | 1 |
| B. | 0 |
| C. | A + B + C |
| D. | -1 |
| Answer» D. -1 | |
| 5. |
What is (AxB).(BxA); or A = A1i + A2j + A3k and B = B1i + B2j + B3k? |
| A. | 0 |
| B. | A1B1A2B2i + A2B2A3B3j + A3B3A1B1k |
| C. | A1B1A1B2i + A2B2A3B2j + A3B3A1B3k |
| D. | A1B1A2B1i + A2B2A2B3j + A3B3A2B1k |
| Answer» B. A1B1A2B2i + A2B2A3B3j + A3B3A1B1k | |
| 6. |
What is the value of {(AxB).(C.D)x(AxB).(C.D)}? For the four vectors A, B, C and D, with A, B, C and D all lying in the same plane? |
| A. | i + j + k |
| B. | ‚àö3(i + j + k) |
| C. | 0 |
| D. | -1(i + j + k) |
| Answer» B. ‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ3(i + j + k) | |
| 7. |
Which is true for two vector A = A1i + A2j + A3k and B = B1i + B2j + B3k? |
| A. | A.B = A1B1 + A2B2 + A3B3 |
| B. | AxB = A1B1 + A2B2 + A3B3 |
| C. | A.B = A1B2 + A2B3 + A3B1 |
| D. | AxB = A1B2 + A2B3 + A3B1 |
| Answer» B. AxB = A1B1 + A2B2 + A3B3 | |
| 8. |
What is multiplication law? |
| A. | A.B =B.A |
| B. | a(A.B) = A.(aB) |
| C. | A.(B+D) = (A.B) + (A.D) |
| D. | a(A.B) = AxB |
| Answer» C. A.(B+D) = (A.B) + (A.D) | |
| 9. |
What is Distributive law? |
| A. | A.B =B.A |
| B. | a(A.B) = A.(aB) |
| C. | A.(B+D) = (A.B) + (A.D) |
| D. | a(A.B) = AxB |
| Answer» D. a(A.B) = AxB | |
| 10. |
Which statement is right? |
| A. | Communitive law: A.B =B.A |
| B. | Multiplicative law: a(A.B) = Ax(aB) |
| C. | Multiplicative law: A.(B+D) = (A.B) + (A.D) |
| D. | Communitive law: a(A.B) = A.(aB) |
| Answer» B. Multiplicative law: a(A.B) = Ax(aB) | |
| 11. |
For two vectors A and B, what is A.B (if they have angle α between them)?$ |
| A. | |A||B| cosα |
| B. | |A||B| |
| C. | √(|A||B|) cosα |
| D. | |A||B| sinα |
| Answer» B. |A||B| | |