MCQOPTIONS
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MCQOPTIONS
This section includes 63 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. |
In selective circuits, the resonant frequency lies in the ________ of the bandwidth frequency range. |
| A. | Beginning |
| B. | End |
| C. | Midpoint |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 52. |
What is the voltage across the capacitor when the source voltage is 100V and the Q factor is 10? |
| A. | 100V |
| B. | 10V |
| C. | 1000V |
| D. | 0V |
| Answer» D. 0V | |
| 53. |
At resonance, bandwidth includes the frequency range that allows _____ percent of the maximum current to flow. |
| A. | 33.33 |
| B. | 66.67 |
| C. | 50 |
| D. | 70.7 |
| Answer» E. | |
| 54. |
What is the power factor of a series RLC circuit under resonance condition? |
| A. | 0 |
| B. | 1 |
| C. | Infinity |
| D. | 100 |
| Answer» C. Infinity | |
| 55. |
The current leads the supply voltage in a series RLC circuit has its frequency _________ the resonant frequency. |
| A. | Above |
| B. | Below |
| C. | Equal to |
| D. | Cannot be determined |
| Answer» C. Equal to | |
| 56. |
What is the correct formula for quality factor? |
| A. | Q=BW*fr |
| B. | Q=BW/fr |
| C. | Q=fr/BW |
| D. | Q=fr² |
| Answer» D. Q=fr² | |
| 57. |
The current lags the supply voltage in a series RLC circuit has its frequency _________ the resonant frequency. |
| A. | Above |
| B. | Below |
| C. | Equal to |
| D. | Cannot be determined |
| Answer» B. Below | |
| 58. |
Quality factor is also known as _________ |
| A. | Voltage magnification |
| B. | Current magnification |
| C. | Resistance magnification |
| D. | Impedance magnification |
| Answer» B. Current magnification | |
| 59. |
What happens to the quality factor when the bandwidth increases? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» C. Remains the same | |
| 60. |
Resonance frequency occurs when __________________ |
| A. | Xₗ=Xc |
| B. | Xₗ>Xc |
| C. | Xₗ<Xc |
| D. | Cannot be determined |
| Answer» B. Xₗ>Xc | |
| 61. |
What is the SI unit for quality factor? |
| A. | Hz |
| B. | kHz |
| C. | MHz |
| D. | No unit |
| Answer» E. | |
| 62. |
What happens to the quality factor when resonant frequency increases? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» B. Decreases | |
| 63. |
If the resonant frequency in a series RLC circuit is 50kHz along with a bandwidth of 1kHz, find the quality factor. |
| A. | 5 |
| B. | 50 |
| C. | 100 |
| D. | 500 |
| Answer» C. 100 | |