MCQOPTIONS
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MCQOPTIONS
This section includes 66 Mcqs, each offering curated multiple-choice questions to sharpen your Active Filter Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following semiconductor materials is (are) used in the manufacturing of tunnel diodes? |
| A. | Germanium |
| B. | Gallium |
| C. | Both germanium and gallium arsenide |
| D. | Silicon |
| Answer» D. Silicon | |
| 52. |
This is an equivalent circuit for the ________ diode. |
| A. | Schottky |
| B. | varicap |
| C. | tunnel |
| D. | - |
| Answer» C. tunnel | |
| 53. |
Which of the following semiconductor materials is (are) used for manufacturing solar cells? |
| A. | Gallium arsenide |
| B. | Indium arsenide |
| C. | Cadmium sulfide |
| D. | All of the above |
| Answer» E. | |
| 54. |
What is the maximum peak voltage for tunnel diodes? |
| A. | 50 mV |
| B. | 100 mV |
| C. | 250 mV |
| D. | 600 mV |
| Answer» E. | |
| 55. |
What is the typical level of change in resistance per degree change in temperature? |
| A. | 1% to 2% |
| B. | 3% to 5% |
| C. | 7% to 10% |
| D. | 10% to 25% |
| Answer» C. 7% to 10% | |
| 56. |
What is the response time of LCDs? |
| A. | Less than 100 ns |
| B. | 50 ms |
| C. | 100 ms to 300 ms |
| D. | 400 ms |
| Answer» D. 400 ms | |
| 57. |
Which of the following is (are) diodes? |
| A. | Schottky |
| B. | Varactor |
| C. | Tunnel |
| D. | All of the above |
| Answer» E. | |
| 58. |
What is the limit of peak current I P in tunnel diodes? |
| A. | A few microamperes to several hundred amperes |
| B. | A few microamperes to several amperes |
| C. | A few microamperes to several milliamperes |
| D. | A few microamperes to several hundred microamperes |
| Answer» B. A few microamperes to several amperes | |
| 59. |
The majority of power diodes are constructed using ________. |
| A. | molybdenum |
| B. | platinum |
| C. | tungsten |
| D. | silicon |
| Answer» E. | |
| 60. |
Which of the following diodes is limited to the reverse-bias region in its region of operation? |
| A. | Schottky |
| B. | Tunnel |
| C. | Photodiode |
| D. | Rectifier |
| Answer» D. Rectifier | |
| 61. |
What is the maximum temperature limit for liquid-crystal displays (LCDs)? |
| A. | 10ºC |
| B. | 30ºC |
| C. | 60ºC |
| D. | 100ºC |
| Answer» D. 100ºC | |
| 62. |
What is the range of the varying capacitor C T in varactor diodes? |
| A. | 0 pF to 5 pF |
| B. | 2 pF to 10 pF |
| C. | 2 F to 100 F |
| D. | 2 pF to 100 pF |
| Answer» E. | |
| 63. |
In which region is the operating point stable in tunnel diodes? |
| A. | Negative-resistance |
| B. | Positive-resistance |
| C. | Both negative- and positive-resistance |
| D. | Neither negative- nor positive-resistance |
| Answer» C. Both negative- and positive-resistance | |
| 64. |
What is the voltage drop across Schottky diodes? |
| A. | 0 V to 0.2 V |
| B. | 0.7 V to 0.8 V |
| C. | 0.8 V to 1.0 V |
| D. | 1.0 V to 1.5 V |
| Answer» B. 0.7 V to 0.8 V | |
| 65. |
Schottky diodes are very effective at frequencies approaching ________. |
| A. | 20 GHz |
| B. | 10 MHz |
| C. | 100 MHz |
| D. | 1 MHz |
| Answer» B. 10 MHz | |
| 66. |
Which of the following areas is (are) an application of infrared-emitting diodes? |
| A. | Intrusion alarms |
| B. | Shaft encoders |
| C. | Paper-tape readers |
| D. | All of the above |
| Answer» E. | |