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Electromagnetic Theory Online Test


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. Determine the charge that produces an electric field strength of 40 V/cm at a distance of 30cm in vacuum(in 10-8C)

Question 1 of 50

2. The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False.

Question 2 of 50

3. The relation between vector potential and field strength is given by

Question 3 of 50

4. In which of the following forms can Maxwell’s equation not be represented?

Question 4 of 50

5. The cavity resonators used in the reflex klystron oscillators are for

Question 5 of 50

6. The power per unit velocity of a wave with electric field as 8 units and density 10 units is

Question 6 of 50

7. The electric field intensity of a field with velocity 10m/s and flux density of 2.8 units is

Question 7 of 50

8. When a material has zero permittivity, the maximum potential that it can possess is

Question 8 of 50

9. The skin depth is measured in

Question 9 of 50

10. The divergence theorem value for the function x2 + y2 + z2 at a distance of one unit from the origin is

Question 10 of 50

11. The power of a wave in a cylindrical waveguide of radius 2m with electric field 12 units is

Question 11 of 50

12. The Gaussian surface is

Question 12 of 50

13. Identify the polarisation of the wave given that, Ex = 2 sin wt and Ey = 3 sin wt.

Question 13 of 50

14. The phase velocity refers to a group of waves and the group velocity refers to a single wave. State true/false.

Question 14 of 50

15. A waveguide imitates which type of filter characteristics?

Question 15 of 50

16. For the wave equation E = 10sin (wt-5z)ax, the wave propagation will be in the direction of

Question 16 of 50

17. Gauss law for electric field uses surface integral. State True/False

Question 17 of 50

18. Find the electron density when convection current density is 120 units and the velocity is 5m/s.

Question 18 of 50

19. For a non-zero Ex component and zero Ey component, the polarisation is

Question 19 of 50

20. The angular separation between the vectors A = 4i + 3j + 5k and B = i - 2j + 2k is (in degrees)

Question 20 of 50

21. The torque expression of a current carrying conductor is

Question 21 of 50

22. Find the relative permittivity of the medium having a refractive index of 1.6

Question 22 of 50

23. Find the potential at a point (4, 3, -6) for the function V = 2x2y + 5z.

Question 23 of 50

24. The Snell’s law can be derived from which type of incidence?

Question 24 of 50

25. Find the magnetization of the field which has a magnetic moment 16 units in a volume of 1.2 units.

Question 25 of 50

26. The Cartesian coordinates can be related to cylindrical coordinates and spherical coordinates. State True/False.

Question 26 of 50

27. In a microwave test bench, why is the microwave signal amplitude modulated at 1 kHz?

Question 27 of 50

28. If Laplace equation satisfies, then which of the following statements will be true?

Question 28 of 50

29. The average power in an electromagnetic wave is given by

Question 29 of 50

30. The radius of the point having a normalised resistance of 1 ohm is

Question 30 of 50

31. The distance vector can be used to compute which of the following?

Question 31 of 50

32. The wavelength of a wave with a frequency of 6 GHz in air is

Question 32 of 50

33. Find the Laplace equation value of the following potential field
V = ρ cosφ + z

Question 33 of 50

34. Gauss law for magnetic fields is given by

Question 34 of 50

35. Calculate the phase constant of a dielectric with frequency 6 x 106 in air.

Question 35 of 50

36. The resistance of a lossless transmission line is

Question 36 of 50

37. Identify which is not a type of waveguide.

Question 37 of 50

38. Conduction in metals is due to

Question 38 of 50

39. A coil is said to be loosely coupled with which of the following conditions?

Question 39 of 50

40. The magnetic field which destroys the superconductivity is called

Question 40 of 50

41. An elliptically polarised wave transmitted at the Brewster angle will be received as an elliptically polarised wave. State True/False

Question 41 of 50

42. The effective skin resistance of a material with conductivity 120 and skin depth of 2μm is

Question 42 of 50

43. The potential of a coaxial cylinder with charge density 1 unit , inner radius 1m and outer cylinder 2m is (in 109)

Question 43 of 50

44. The expression for magnetization is given by(I-current, A-area, V-volume)

Question 44 of 50

45. The magnetic vector potential for a line current will be inversely proportional to

Question 45 of 50

46. The magnetic moment of a field with current 12A and area 1.6 units is

Question 46 of 50

47. In dielectric medium, the Maxwell second equation becomes

Question 47 of 50

48. When a dielectric loses its dielectric property, the phenomenon is called

Question 48 of 50

49. Find the conduction current density of a material with conductivity 200units and electric field 1.5 units.

Question 49 of 50

50. Find the value of Stoke’s theorem for y i + z j + x k.

Question 50 of 50


 


Electromagnetic Theory Certification Test

Electromagnetic Theory Certification Test is a free certification exam. However, you need to score an A grade in each of the "Certification Level Tests 1 to 10" to be eligible to take part in this certification test. So, take all the "10 Tests" starting from Certification Level 1 upto Level 10, before taking the final Certification test.

Level 1 Test Certification Test

Level 1 to 10 Tests:
Total Questions: 25, Total Time: 30 min, Correct Answer: 2 points, Wrong Answer: -1 point

Certification Test:
Total Questions: 50, Total Time: 1 hour, Correct Answer: 2 points, Wrong Answer: -1 point

Electromagnetic Theory Internship Test

If you scored either Grade A* or Grade A in our Electromagnetic Theory Internship Test, then you can apply for Internship at Sanfoundry in Electromagnetic Theory.

Electromagnetic Theory Internship Test

Total Questions: 50, Total Time: 1 hour, Correct Answer: 2 points, Wrong Answer: -1 point

Electromagnetic Theory Job Test

It is designed to test and improve your skills for a successful career, as well as to apply for jobs.

Electromagnetic Theory Job Test

Total Questions: 50, Total Time: 1 hour, Correct Answer: 2 points, Wrong Answer: -1 point

Note: Before you get started on these series of online tests, you should practice our collection of 1000 MCQs on Electromagnetic Theory .

Sanfoundry Scoring & Grading System

Sanfoundry tests and quizzes are designed to provide a real-time online exam experience. Here is what you need to know about them.

  • Scoring System: You get 2 points for each correct answer but lose 1 point for every wrong answer.
  • Grading System: Your grade depends on your final score and can be one of the following:

    • Grade A* - Genius (100%)
    • Grade A - Excellent (80% to 99%)
    • Grade B - Good (60% to 80%)
    • Grade C - Average (40% to 60%)
    • Grade D - Poor (0% to 40%)
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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.