MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
m/s. |
| A. | 16.67 |
| B. | 2400 |
| C. | 2880 |
| D. | 0.06 |
| Answer» C. 2880 | |
| 2. |
units. |
| A. | 200 |
| B. | 50 |
| C. | 400 |
| D. | 0.02 |
| Answer» B. 50 | |
| 3. |
Transform the vector (4,-2,-4) at (1,2,3) into spherical coordinates. |
| A. | 3.197i – 2.393j + 4.472k |
| B. | -3.197i + 2.393j – 4.472k |
| C. | 3.197i + 2.393j + 4.472k |
| D. | -3.197i – 2.393j – 4.472k |
| Answer» C. 3.197i + 2.393j + 4.472k | |
| 4. |
, -2) |
| A. | 2.467i + j + 1.167k |
| B. | 2.467i – j + 1.167k |
| C. | 2.467i – j – 1.167k |
| D. | 2.467i + j – 1.167k |
| Answer» B. 2.467i – j + 1.167k | |
| 5. |
Transform the vector A = 3i – 2j – 4k at P(2,3,3) to cylindrical coordinates |
| A. | -3.6j – 4k |
| B. | -3.6j + 4k |
| C. | 3.6j – 4k |
| D. | 3.6j + 4k |
| Answer» B. -3.6j + 4k | |
| 6. |
-10 units) |
| A. | 2.1 |
| B. | 2.33 |
| C. | 2.5 |
| D. | 2.77 |
| Answer» D. 2.77 | |
| 7. |
at R = 4m and σ =-3 at R = 5m. Find the flux density at R = 4.5m. |
| A. | 4/4.5 |
| B. | 3/4.5 |
| C. | 2/4.5 |
| D. | 1/4.5 |
| Answer» D. 1/4.5 | |
| 8. |
at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 3m. |
| A. | 3 |
| B. | 10/3 |
| C. | 11/3 |
| D. | 4 |
| Answer» C. 11/3 | |
| 9. |
at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 1m. |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 10. |
at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 6m. |
| A. | 17/6 |
| B. | -17/6 |
| C. | 13/6 |
| D. | -13/6 |
| Answer» E. | |
| 11. |
m from the ring. |
| A. | 18Ï€ |
| B. | 24Ï€ |
| C. | 36Ï€ |
| D. | 72Ï€ |
| Answer» E. | |
| 12. |
,1,3). |
| A. | 105 |
| B. | 106 |
| C. | 107 |
| D. | 108 |
| Answer» C. 107 | |
| 13. |
5 X 10-7 C, both the charges are in vacuum. |
| A. | 0.03 |
| B. | 0.05 |
| C. | 0.07 |
| D. | 0.09 |
| Answer» E. | |
| 14. |
14 units? |
| A. | 1 |
| B. | 0.75 |
| C. | 0.5 |
| D. | 0.25 |
| Answer» E. | |
| 15. |
,1,1)m? |
| A. | 10-6 |
| B. | -10-6 |
| C. | 106 |
| D. | -106 |
| Answer» C. 106 | |
| 16. |
πεh).aN. State True/False. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 17. |
cm in vacuum(in 10-8C) |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» B. 2 | |
| 18. |
cm and minimises as d increases. State True/False |
| A. | true |
| B. | false |
| Answer» B. false | |
| 19. |
5cm apart in transformer oil(εr=2.2) in 10-4 N, |
| A. | 8.15 |
| B. | 5.18 |
| C. | 1.518 |
| D. | 1.815 |
| Answer» E. | |
| 20. |
= 9. |
| A. | 120Ï€ |
| B. | 180Ï€ |
| C. | 240Ï€ |
| D. | 300Ï€ |
| Answer» C. 240Ï€ | |
| 21. |
j. |
| A. | 20 |
| B. | 70/3 |
| C. | 80/3 |
| D. | 30 |
| Answer» D. 30 | |
| 22. |
in volume integral. |
| A. | 80 π |
| B. | 5 π |
| C. | 75 π |
| D. | 85 π |
| Answer» D. 85 Ï€ | |
| 23. |
and 1, y = 0 and 2, z = 0 and 3. |
| A. | 10 |
| B. | 12 |
| C. | 14 |
| D. | 16 |
| Answer» C. 14 | |
| 24. |
πε) ln(b/a). State True/False. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 25. |
, hence find charge using volume integral. |
| A. | 6100 π |
| B. | 6200 π |
| C. | 6300 π |
| D. | 6400 π |
| Answer» E. | |
| 26. |
i in spherical coordinates with r = 4m and θ = π/2. |
| A. | 600 |
| B. | 599.8 |
| C. | 588.9 |
| D. | 577.8 |
| Answer» D. 577.8 | |
| 27. |
i + 2xy j + 5xz2 k |
| A. | √4.01 |
| B. | √4.02 |
| C. | √4.03 |
| D. | √4.04 |
| Answer» E. | |
| 28. |
+ z2 at (1,1,1) |
| A. | i + j + k |
| B. | 2i + 2j + 2k |
| C. | 2xi + 2yj + 2zk |
| D. | 4xi + 2yj + 4zk |
| Answer» C. 2xi + 2yj + 2zk | |
| 29. |
/x) j + 5 k. |
| A. | -8.014 |
| B. | -8.114 |
| C. | -8.214 |
| D. | -8.314 |
| Answer» D. -8.314 | |
| 30. |
Find the gradient of t = x2y+ ez at the point p(1,5,-2) |
| A. | i + 10j + 0.135k |
| B. | 10i + j + 0.135k |
| C. | i + 0.135j + 10k |
| D. | 10i + 0.135j + k |
| Answer» C. i + 0.135j + 10k | |
| 31. |
,2,5) is (in Joule) |
| A. | 0.64 |
| B. | 0.72 |
| C. | 0.78 |
| D. | 0.80 |
| Answer» C. 0.78 | |
| 32. |
Given the vector potential is 16 – 12sin y j. Find the field intensity at the origin. |
| A. | 28 |
| B. | 16 |
| C. | 12 |
| D. | 4 |
| Answer» D. 4 | |
| 33. |
The value of ∫ H.dL will be |
| A. | j |
| B. | i |
| C. | b |
| D. | h |
| Answer» C. b | |
| 34. |
Find the displacement current density of a material with flux density of 5sin t |
| A. | 2.5cos t |
| B. | 2.5sin t |
| C. | 5cos t |
| D. | 5sin t |
| Answer» D. 5sin t | |
| 35. |
Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. |
| A. | 6 |
| B. | -6 |
| C. | 1 |
| Answer» C. 1 | |
| 36. |
The Laplacian of the magnetic vector potential will be |
| A. | –μ j |
| B. | – μ i |
| C. | –μ b |
| D. | –μ h |
| Answer» B. – μ i | |
| 37. |
Which of the following identities is always zero for static fields? |
| A. | grad(curl v) |
| B. | curl(div v) |
| C. | div(grad v) |
| D. | curl(grad v) |
| Answer» E. | |
| 38. |
The curl of the electric field intensity is |
| A. | conservative |
| B. | rotational |
| C. | divergent |
| D. | static |
| Answer» C. divergent | |
| 39. |
The attenuation is given by 20 units. Find the power loss in decibels. |
| A. | 13.01 |
| B. | 26.02 |
| C. | 52.04 |
| D. | 104.08 |
| Answer» B. 26.02 | |
| 40. |
The current reflection coefficient is given by -0.75. Find the voltage reflection coefficient. |
| A. | -0.75 |
| B. | 0.25 |
| C. | -0.25 |
| D. | 0.75 |
| Answer» E. | |
| 41. |
The incident and the reflected voltage are given by 15 and 5 respectively. The transmission coefficient is |
| A. | 1/3 |
| B. | 2/3 |
| C. | 1 |
| D. | 3 |
| Answer» C. 1 | |
| 42. |
The power reflected by a wave with incident power of 16 units is(Given that the reflection coefficient is 0.5) |
| A. | 2 |
| B. | 8 |
| C. | 6 |
| D. | 4 |
| Answer» E. | |
| 43. |
The power of the electromagnetic wave with electric and magnetic field intensities given by 12 and 15 respectively is |
| A. | 180 |
| B. | 90 |
| C. | 45 |
| D. | 120 |
| Answer» C. 45 | |
| 44. |
The power of a wave of with voltage of 140V and a characteristic impedance of 50 ohm is |
| A. | 1.96 |
| B. | 19.6 |
| C. | 196 |
| D. | 19600 |
| Answer» D. 19600 | |
| 45. |
Find the conductivity of a material with conduction current density 100 units and electric field of 4 units. |
| A. | 25 |
| B. | 400 |
| C. | 0.04 |
| D. | 1600 |
| Answer» B. 400 | |
| 46. |
Calculate the displacement current density when the electric flux density is 20sin 0.5t. |
| A. | 10sin 0.5t |
| B. | 10cos 0.5t |
| C. | 20sin 2t |
| D. | 20cos 2t |
| Answer» C. 20sin 2t | |
| 47. |
Find the flux enclosed by a material of flux density 12 units in an area of 80cm. |
| A. | 9.6 |
| B. | 12/80 |
| C. | 80/12 |
| D. | 12/0.8 |
| Answer» B. 12/80 | |
| 48. |
In metals which of the following equation will hold good? |
| A. | curl(h) = j |
| B. | curl(j) = dd/dt |
| C. | curl(h) = d |
| D. | curl(j) = db/dt |
| Answer» B. curl(j) = dd/dt | |
| 49. |
Find the electric flux density of a material with charge density 16 units in unit volume. |
| A. | 1/16 |
| B. | 16t |
| C. | 16 |
| D. | 162 |
| Answer» D. 162 | |
| 50. |
The charge build up in the capacitor is due to which quantity? |
| A. | conduction current |
| B. | displacement current |
| C. | convection current |
| D. | direct current |
| Answer» C. convection current | |