MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the output voltage of the Buck converter if the supply voltage is 13 V and duty cycle value is .16. |
| A. | 2.08 V |
| B. | 2.24 V |
| C. | 2.58 V |
| D. | 2.54 V |
| Answer» B. 2.24 V | |
| 2. |
d(v) d(t) is more reliable for SCR triggering. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
70 V rated 6 SCRs are connected in series. The operation voltage of the string is 130. Calculate the De-rating factor. |
| A. | .70 |
| B. | .73 |
| C. | .78 |
| D. | .74 |
| Answer» B. .73 | |
| 4. |
Calculate the string efficiency if the de-rating factor is .50. |
| A. | 28 % |
| B. | 42 % |
| C. | 80 % |
| D. | 50 % |
| Answer» E. | |
| 5. |
Calculate the De-rating factor if the string efficiency is 98%. |
| A. | .04 |
| B. | .02 |
| C. | .05 |
| D. | .03 |
| Answer» C. .05 | |
| 6. |
A step-down chopper has input voltage .1 V and output voltage .01 V. Calculate the value of the duty cycle. |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.3 |
| D. | 0.5 |
| Answer» B. 0.2 | |
| 7. |
Which one of the following load is suitable for leading power factor load in Single phase Half-bridge inverter? |
| A. | C load |
| B. | R-L-C overdamped |
| C. | R-L-C underdamped |
| D. | L-C load |
| Answer» D. L-C load | |
| 8. |
Which one of the following load is suitable for lagging power factor load in Single phase Half-bridge inverter? |
| A. | C load |
| B. | R-L-C overdamped |
| C. | R-L-C underdamped |
| D. | L-C load |
| Answer» C. R-L-C underdamped | |
| 9. |
Calculate the value of the fundamental displacement factor for 1- Full wave semi-converter if the firing angle value is 95o. |
| A. | .60 |
| B. | .68 |
| C. | .62 |
| D. | .67 |
| Answer» E. | |
| 10. |
Calculate the value of the fundamental displacement factor for 1- Full wave bridge rectifier if the firing =17 . |
| A. | .98 |
| B. | .19 |
| C. | .56 |
| D. | .95 |
| Answer» E. | |
| 11. |
Calculate the value of the conduction angle for R-L load if the value of and are 56 and 18 . |
| A. | 48 |
| B. | 38 |
| C. | 57 |
| D. | 15 |
| Answer» C. 57 | |
| 12. |
Calculate the value of the conduction angle for diode for R-L load with a freewheeling diode if the value of is 226 . (Discontinuous conduction mode) |
| A. | 40 |
| B. | 45 |
| C. | 50 |
| D. | 46 |
| Answer» C. 50 | |
| 13. |
Calculate the value of the conduction angle for diode for R-L load with a freewheeling diode if the value of is 45 . (Continous conduction mode) |
| A. | 220 |
| B. | 225 |
| C. | 230 |
| D. | 280 |
| Answer» C. 230 | |
| 14. |
Calculate the value of the conduction angle for SCR for R-L load with a freewheeling diode if the value of and are 65 and 12 . |
| A. | 168 |
| B. | 170 |
| C. | 130 |
| D. | 180 |
| Answer» B. 170 | |
| 15. |
Calculate the voltage across the freewheeling diode when the output voltage is 24 V. |
| A. | -15 V |
| B. | -24 V |
| C. | 28 V |
| D. | 39 V |
| Answer» C. 28 V | |