MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A full wave rectifier with a load resistance of 5K uses an inductor filter of 15henry. The peak value of applied voltage is 250V and the frequency is 50 cycles per second. Calculate the ripple factor ( ). |
| A. | 0.1 |
| B. | 0.6 |
| C. | 0.5 |
| D. | 0.4 |
| Answer» E. | |
| 2. |
What causes to decrease the sudden rise in the current for a rectifier? |
| A. | the electrical energy |
| B. | The ripple factor |
| C. | The magnetic energy |
| D. | Infinite resistance |
| Answer» D. Infinite resistance | |
| 3. |
The output voltage VDC for a rectifier with inductor filter is given by_________ |
| A. | (2V<sub>m</sub>/ )-I<sub>DC</sub>R |
| B. | (2V<sub>m</sub>/ )+I<sub>DC</sub>R |
| C. | (2V<sub>m</sub> )-I<sub>DC</sub>R |
| D. | (2V<sub>m</sub> )+I<sub>DC</sub>R |
| Answer» B. (2V<sub>m</sub>/ )+I<sub>DC</sub>R | |
| 4. |
A dc voltage of 380V with a peak ripple voltage not exceeding 7V is required to supply a 500 load. Find out the inductance required. |
| A. | 10.8henry |
| B. | 30.7henry |
| C. | 28.8henry |
| D. | 15.4henry |
| Answer» D. 15.4henry | |
| 5. |
A full wave rectifier with a load resistance of 5K uses an inductor filter of 15henry. The peak value of applied voltage is 250V and the frequency is 50 cycles per second. Calculate the dc load current. |
| A. | 0.7mA |
| B. | 17mA |
| C. | 10.6mA |
| D. | 20mA |
| Answer» D. 20mA | |
| 6. |
The ripple factor ( ) of inductor filter is_________ |
| A. | = R<sub>Z</sub>3/ 2 L |
| B. | = R<sub>Z</sub>/3 2 L |
| C. | = R<sub>Z</sub>3 2/ L |
| D. | = R<sub>Z</sub>3/ 2 L |
| Answer» C. = R<sub>Z</sub>3 2/ L | |