MCQOPTIONS
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MCQOPTIONS
This section includes 62 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. |
Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure. |
| A. | 1,027 Hz |
| B. | 10,270 Hz |
| C. | 6,330 Hz |
| D. | 63,330 Hz |
| Answer» B. 10,270 Hz | |
| 52. |
The two basic components of a Thevenin equivalent ac circuit are |
| A. | the equivalent voltage source and the equivalent series impedance |
| B. | the equivalent voltage source and the equivalent series resistance |
| C. | the equivalent voltage source and the equivalent parallel impedance |
| D. | the equivalent voltage source and the equivalent parallel resistance |
| Answer» B. the equivalent voltage source and the equivalent series resistance | |
| 53. |
Referring to the given circuit, determine ZTH as seen by RL. |
| A. | 1444–48.5° |
| B. | 4176 –73.3° |
| C. | 956 –48.5° |
| D. | 1444 –73.3° |
| Answer» B. 4176 ‚Äì73.3¬∞ | |
| 54. |
For the given circuit, find VTH for the circuit external to RL. |
| A. | 4.6951.3° V |
| B. | 4.6938.7° V |
| C. | 46938.7° mV |
| D. | 60° V |
| Answer» C. 46938.7¬∞ mV | |
| 55. |
If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant |
| A. | is zero |
| B. | is the sum of the two currents |
| C. | is the difference between the two currents |
| D. | cannot be determined |
| Answer» C. is the difference between the two currents | |
| 56. |
Determine VTH when R1 is 180 and XL is 90 . |
| A. | 13563.4° V |
| B. | 13.563.4° V |
| C. | 12.20° V |
| D. | 1220° V |
| Answer» C. 12.20¬∞ V | |
| 57. |
One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 58. |
Referring to the given circuit, find ZTH if R is 15 k and RL is 38 k. |
| A. | 89.82 –51.3° k |
| B. | 19.2 –38.3° k |
| C. | 9.38–51.3° k |
| D. | 180 –38.3° k |
| Answer» D. 180 ‚Äì38.3¬∞ k | |
| 59. |
Determine VTH for the circuit external to RL in the given figure. |
| A. | 13563.4° V |
| B. | 13.563.4° V |
| C. | 13.50° V |
| D. | 1350° V |
| Answer» C. 13.50¬∞ V | |
| 60. |
For the circuit shown, determine ZTH for the portion of the circuit external to RL. |
| A. | 66.7 –33.7° k |
| B. | 6.67–333.7° k |
| C. | 14.4 –56.3° k |
| D. | 1.44 –33.7° k |
| Answer» C. 14.4 ‚Äì56.3¬∞ k | |
| 61. |
Referring to the given circuit, what is ZTH if R1 is changed to 220 ? |
| A. | 22512.1° |
| B. | 22577.9° |
| C. | 4677.9° |
| D. | 4612.1° |
| Answer» D. 4612.1¬∞ | |
| 62. |
For the circuit given, determine the Thevenin voltage as seen by RL. |
| A. | 0.57416.7° V |
| B. | 5.7416.7° V |
| C. | 0.574 –16.7° V |
| D. | 5.74–16.7° V |
| Answer» E. | |