MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the peak voltage on a centre tapped full wave rectifier circuit is 5V and diode cut in voltage is 0.7. The peak inverse voltage on diode is_________ |
| A. | 4.3V |
| B. | 9.3V |
| C. | 5.7V |
| D. | 10.7V |
| Answer» C. 5.7V | |
| 2. |
In a centre tapped full wave rectifier, RL=1KΩ and for diode Rf=10Ω. The primary voltage is 800sinωt with transformer turns ratio=2. The ripple factor will be _________ |
| A. | 54% |
| B. | 48% |
| C. | 26% |
| D. | 81% |
| Answer» C. 26% | |
| 3. |
A full wave rectifier uses load resistor of 1500Ω. Assume the diodes have Rf=10Ω, Rr=∞. The voltage applied to diode is 30V with a frequency of 50Hz. Calculate the AC power input. |
| A. | 368.98mW |
| B. | 275.2mW |
| C. | 145.76mW |
| D. | 456.78mW |
| Answer» C. 145.76mW | |
| 4. |
A full wave rectifier supplies a load of 1KΩ. The AC voltage applied to diodes is 220V (rms). If diode resistance is neglected, what is the ripple voltage? |
| A. | 0.562V |
| B. | 0.785V |
| C. | 0.954V |
| D. | 0.344V |
| Answer» D. 0.344V | |