MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Determine the distortion factor (μ) for a full bridge inverter with supply Vs = 60 V. |
| A. | 0.8 |
| B. | 0.7 |
| C. | 0.9 |
| D. | 1 |
| Answer» D. 1 | |
| 2. |
A single phase full bridge inverter using transistors and diodes is feeding a R load of 3 Ω with the dc input voltage of 60 V. Find the fundamental frequency output power. |
| A. | 1200 W |
| B. | 856 W |
| C. | 972 W |
| D. | 760 W |
| Answer» D. 760 W | |
| 3. |
A single phase full bridge inverter using transistors and diodes is feeding a R load of 3 Ω with the dc input voltage of 60 V. Find the rms output voltage and the peak reverse blocking voltage of each transistor. |
| A. | 30 V, 60 V |
| B. | 30 V, 30 V |
| C. | 60 V, 60 V |
| D. | 60 V, 30 V |
| Answer» D. 60 V, 30 V | |
| 4. |
Find the distortion factor (μ), for a single phase half wave bridge inverter with dc source Vs = 1 kV. |
| A. | 0.87 |
| B. | 1 |
| C. | 0.9 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 5. |
A single-phase half bridge inverter is connected to a 230 V dc source which is feeding a R load of 10 Ω. Determine the average current through each SCR inverter switch. |
| A. | 11.5 A |
| B. | 5.75 A |
| C. | 23 A |
| D. | none of the mentioned |
| Answer» C. 23 A | |
| 6. |
A single-phase half bridge inverter is connected to a 230 V dc source which is feeding a R load of 10 Ω. Determine the fundamental power delivered to the load. |
| A. | 1.07 W |
| B. | 107.2 W |
| C. | 1.07 kW |
| D. | 107.2 kW |
| Answer» D. 107.2 kW | |
| 7. |
The distortion factor (μ) is the ratio of |
| A. | total rms output voltage to fundamental rms output voltage |
| B. | fundamental rms output voltage to fundamental average output voltage |
| C. | total rms output voltage to rms value of all the harmonic components |
| D. | fundamental rms output voltage to total rms output voltage |
| Answer» E. | |
| 8. |
If Vr is the rms value of the inverter output voltage and V1 is the rms value of the fundamental component, then the total harmonic distortion (THD) is given by |
| A. | Vr/V1 |
| B. | (Vr + V1r |
| C. | [ (Vr/V1)2 – 1 ]1/2 |
| D. | [ (Vr/V1)1/2 + 1 ]2 |
| Answer» D. [ (Vr/V1)1/2 + 1 ]2 | |
| 9. |
A_SINGLE_PHASE_FULL_BRIDGE_INVERTER_USING_TRANSISTORS_AND_DIODES_IS_FEEDING_A_R_LOAD_OF_3_‚ÄÖ√Ñ√∂‚ÀÖ√´¬¨‚ÀÇ_WITH_THE_DC_INPUT_VOLTAGE_OF_60_V._FIND_THE_FUNDAMENTAL_FREQUENCY_OUTPUT_POWER.?$# |
| A. | 1200 W |
| B. | 856 W |
| C. | 972 W |
| D. | 760 W |
| Answer» D. 760 W | |
| 10. |
Determine_the_distortion_factor_(μ)_for_a_full_bridge_inverter_with_supply_Vs_=_60_V.$# |
| A. | 0.8 |
| B. | 0.7 |
| C. | 0.9 |
| D. | 1 |
| Answer» D. 1 | |
| 11. |
A single phase full bridge inverter using transistors and diodes is feeding a R load of 3 Ω with the dc input voltage of 60 V. Find the rms output voltage and the peak reverse blocking voltage of each transistor?# |
| A. | 30 V, 60 V |
| B. | 30 V, 30 V |
| C. | 60 V, 60 V |
| D. | 60 V, 30 V |
| Answer» D. 60 V, 30 V | |
| 12. |
What would be the harmonic factor of lowest order harmonic in case of a half wave bridge inverter? |
| A. | 1/1 |
| B. | 1/3 |
| C. | 1/2 |
| D. | Insufficient data |
| Answer» C. 1/2 | |
| 13. |
A single phase inverter gives rms value of output voltage as 115 V and the fundamental output voltage of as 103.5 V. Find the THD (Total Harmonic Distortion). |
| A. | 0.4 % |
| B. | 40.8 % |
| C. | 48.3 % |
| D. | 4.83 % |
| Answer» D. 4.83 % | |
| 14. |
Find the distortion factor (μ), for a single phase half wave bridge inverter with dc source Vs = 1 kV.$ |
| A. | 0.87 |
| B. | 1 |
| C. | 0.9 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 15. |
A single-phase half bridge inverter is connected to a 230 V dc source which is feeding a R load of 10 Ω. Determine the average current through each SCR inverter switch.$ |
| A. | 11.5 A |
| B. | 5.75 A |
| C. | 23 A |
| D. | none of the mentioned |
| Answer» C. 23 A | |
| 16. |
A single-phase half bridge inverter is connected to a 230 V dc source which is feeding a R load of 10 Ω. Determine the fundamental power delivered to the load.$ |
| A. | 1.07 W |
| B. | 107.2 W |
| C. | 1.07 kW |
| D. | 107.2 kW |
| Answer» D. 107.2 kW | |
| 17. |
The distortion factor (μ) is the ratio of$ |
| A. | total rms output voltage to fundamental rms output voltage |
| B. | fundamental rms output voltage to fundamental average output voltage |
| C. | total rms output voltage to rms value of all the harmonic components |
| D. | fundamental rms output voltage to total rms output voltage |
| Answer» E. | |
| 18. |
If Vr is the rms value of the inverter output voltage and V1 is the rms value of the fundamental component, then the total harmonic distortion (THD) is given by |
| A. | V<sub>r</sub>/V<sub>1</sub> |
| B. | (V<sub>r</sub> + V<sub>1r</sub> |
| C. | [ (V<sub>r</sub>/V<sub>1</sub>)<sup>2</sup> – 1 ]<sup>1/2</sup> |
| D. | [ (V<sub>r</sub>/V<sub>1</sub>)<sup>1/2</sup> + 1 ]<sup>2</sup> |
| Answer» D. [ (V<sub>r</sub>/V<sub>1</sub>)<sup>1/2</sup> + 1 ]<sup>2</sup> | |