MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the value of peak reverse voltage (P.I.V.) if the full-wave rectifier has an alternating voltage of 300 V. |
| A. | 849 V |
| B. | 800 V |
| C. | 750 V |
| D. | 870 V |
| Answer» B. 800 V | |
| 2. |
What is the rms value of output current if the peak value of output current is given as 0.092 A? |
| A. | 0.65 A |
| B. | 6.5 A |
| C. | 0.45 A |
| D. | 0.065 A |
| Answer» E. | |
| 3. |
Find the value of output direct current if the peak value of output current is given as 0.095 A. |
| A. | 0.6 |
| B. | 0.060 |
| C. | 0.05 |
| D. | 6.06 |
| Answer» C. 0.05 | |
| 4. |
An alternating voltage of 360 V, 50 Hz is applied to a full-wave rectifier. The internal resistance of each diode is 100 W. If RL = 5 kW, then what is the peak value of output current? |
| A. | 0.9 A |
| B. | 0.07 A |
| C. | 0.097 A |
| D. | 1.097 A |
| Answer» D. 1.097 A | |
| 5. |
What is the form factor for a full-wave rectifier? |
| A. | 1.11 |
| B. | 1.57 |
| C. | 2.62 |
| D. | 0.453 |
| Answer» B. 1.57 | |
| 6. |
Identify the expression for rectification efficiency from the following. |
| A. | = ( frac {ac , input , power , from , transformer , secondary}{dc , power , delivered , to , load} ) |
| B. | =dc power delivered to load ac input power from transformer secondary |
| C. | =dc power delivered to load + ac input power from transformer secondary |
| D. | = ( frac {dc , power , delivered , to , load}{ac , input , power , from , transformer , secondary} ) |
| Answer» E. | |
| 7. |
The ripple frequency of a full-wave rectifier is twice to that of a half-wave rectifier. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the ripple factor for a half-wave rectifier? |
| A. | 2.0 |
| B. | 1.21 |
| C. | 0.482 |
| D. | 0.877 |
| Answer» C. 0.482 | |
| 9. |
How many main types of rectifiers are there? |
| A. | 1 |
| B. | 5 |
| C. | 2 |
| D. | 4 |
| Answer» D. 4 | |
| 10. |
What is a rectifier used for? |
| A. | Convert ac voltage to dc voltage |
| B. | Convert dc voltage to ac voltage |
| C. | Measure resistance |
| D. | Measure current |
| Answer» B. Convert dc voltage to ac voltage | |