MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the Pythagorean Theorem is valid in Electromagnetics? |
| A. | |dot product| + |dot product| = 1 |
| B. | |cross product| – |cross product| = 1 |
| C. | |dot product|2 + |cross product|2 = 1 |
| D. | |dot product| + |cross product| = 0 |
| Answer» D. |dot product| + |cross product| = 0 | |
| 2. |
The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The work done of vectors force F and distance d, separated by angle θ can be calculated using, |
| A. | Cross product |
| B. | Dot product |
| C. | Addition of two vectors |
| D. | Cannot be calculated |
| Answer» C. Addition of two vectors | |
| 4. |
The cross product of the vectors 3i + 4j – 5k and –i + j – 2k is, |
| A. | 3i – 11j + 7k |
| B. | -3i + 11j + 7k |
| C. | -3i – 11j – 7k |
| D. | -3i + 11j – 7k |
| Answer» C. -3i – 11j – 7k | |
| 5. |
WHICH_OF_THE_PYTHAGOREAN_THEOREM_IS_VALID_IN_ELECTROMAGNETICS??$ |
| A. | |dot product| + |dot product| = 1 |
| B. | |cross product| – |cross product| = 1 |
| C. | |dot product|<sup>2</sup> + |cross product|<sup>2</sup> = 1 |
| D. | |dot product| + |cross product| = 0 |
| Answer» D. |dot product| + |cross product| = 0 | |
| 6. |
Which_of_the_following_is_not_true?$ |
| A. | A . (B . C) = scalar value |
| B. | A . (B x C) = scalar value |
| C. | A x (B . C) = scalar value |
| D. | A x (B x C) = vector value |
| Answer» D. A x (B x C) = vector value | |
| 7. |
The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Electromagnetic forces are defined by |
| A. | Fleming’s right hand rule |
| B. | Fleming’s left hand rule |
| C. | Faraday’s law |
| D. | Ampere law |
| Answer» C. Faraday‚Äö√Ñ√∂‚àö√ë‚àö¬•s law | |
| 9. |
Lorentz force is based on, |
| A. | Dot product |
| B. | Cross product |
| C. | Both dot and cross product |
| D. | Independent of both |
| Answer» C. Both dot and cross product | |
| 10. |
Find whether the vectors are parallel, (-2,1,-1) and (0,3,1) |
| A. | Parallel |
| B. | Collinearly parallel |
| C. | Not parallel |
| D. | Data insufficient |
| Answer» D. Data insufficient | |
| 11. |
The work done of vectors force F and distance d, separated by angle θ can be calculated using,$ |
| A. | Cross product |
| B. | Dot product |
| C. | Addition of two vectors |
| D. | Cannot be calculated |
| Answer» C. Addition of two vectors | |
| 12. |
Which of the following are not vector functions in Electromagnetics? |
| A. | Gradient |
| B. | Divergence |
| C. | Curl |
| D. | There is no non- vector functions in Electromagnetics |
| Answer» E. | |
| 13. |
The cross product of the vectors 3i + 4j – 5k and –i + j – 2k is,$ |
| A. | 3i – 11j + 7k |
| B. | -3i + 11j + 7k |
| C. | -3i – 11j – 7k |
| D. | -3i + 11j – 7k |
| Answer» C. -3i ‚Äö√Ñ√∂‚àö√ë‚àö¬® 11j ‚Äö√Ñ√∂‚àö√ë‚àö¬® 7k | |
| 14. |
When two vectors are perpendicular, their |
| A. | Dot product is zero |
| B. | Cross product is zero |
| C. | Both are zero |
| D. | Both are not necessarily zero |
| Answer» B. Cross product is zero | |