MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 67 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Divergence of a vector at a point in a vector field is __________ quantity. |
| A. | vector |
| B. | scalar |
| C. | both (a) an (b) |
| D. | none of these |
| Answer» C. both (a) an (b) | |
| 52. |
At the point of discontinuity, __________ component of magnetic flux density is continuous. |
| A. | Tangential |
| B. | Normal |
| C. | None of these |
| D. | Cannot say |
| Answer» C. None of these | |
| 53. |
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be |
| A. | 60 N |
| B. | 30 N |
| C. | 40 N |
| D. | 15 N |
| Answer» C. 40 N | |
| 54. |
Total flux passing through a closed surface held in a magnetic field is __________. |
| A. | Infinity |
| B. | Zero |
| C. | Unity |
| D. | None of these |
| Answer» C. Unity | |
| 55. |
The value of E within the field due to a point charge can be found with the help of |
| A. | Faraday's laws |
| B. | Kirchhoff s laws |
| C. | Coulomb's laws |
| D. | none of the above |
| Answer» D. none of the above | |
| 56. |
According to Faraday's __________ Law, as long as changes happen in magnetic flux, induced emf persists. |
| A. | First |
| B. | Second |
| C. | Third |
| D. | Fourth |
| Answer» B. Second | |
| 57. |
In the case of a perfect dielectric medium, phase constant ______________ as conductivity increases. |
| A. | Increases |
| B. | Decreases |
| C. | Remains unchanged |
| D. | None of these |
| Answer» B. Decreases | |
| 58. |
The number of Faraday tubes of flux passing through a surface in an electric field is called |
| A. | electric flux |
| B. | electric flux density |
| C. | magnetic flux density |
| D. | electric charge density |
| Answer» B. electric flux density | |
| 59. |
the total electric flux through any closed surface surrounding charges is equal to the amount of charge enclosed . |
| A. | Coulomb s square law |
| B. | Gauss s law |
| C. | Maxwell s first law |
| D. | Maxwell s second law |
| Answer» C. Maxwell s first law | |
| 60. |
Emf is closed __________ integral of non-conservational electric field that is generated by battery. |
| A. | Line |
| B. | Surface |
| C. | Volume |
| D. | None of these |
| Answer» B. Surface | |
| 61. |
__________ gradient of magnetic scalar potential gives magnetic field intensity. |
| A. | Positive |
| B. | Negative |
| C. | Double |
| D. | Integral |
| Answer» C. Double | |
| 62. |
A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be |
| A. | 10 F |
| B. | 10 uF |
| C. | 100 nF |
| D. | 1000 uF |
| Answer» C. 100 nF | |
| 63. |
The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. If the distance is reduced to 2 metres, the field intensity will be |
| A. | 400 N/C |
| B. | 600 N/C |
| C. | 800 N/C |
| D. | 1200 N/C |
| Answer» D. 1200 N/C | |
| 64. |
Electric intensity at any point in an electric field is equal to the at that point. |
| A. | electric flux |
| B. | magnetic flux density |
| C. | potential gradient |
| D. | none of the above |
| Answer» D. none of the above | |
| 65. |
According to the method of images, the tangential component of electric field to conductor surface is __________. |
| A. | Unity |
| B. | Zero |
| C. | Infinity |
| D. | None of these |
| Answer» C. Infinity | |
| 66. |
Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules |
| A. | CV2 |
| B. | C2V |
| C. | CV3 |
| D. | CV |
| Answer» B. C2V | |
| 67. |
The electric field at a point situated as a distance d from straight charged conductor is |
| A. | Proportional to d |
| B. | Inversely proportional to d |
| C. | Inversely proportional to distance |
| D. | None of the above |
| Answer» C. Inversely proportional to distance | |