MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
A_SINGLE_PHASE_FULL_BRIDGE_INVERTER_HAS_RLC_LOAD._THE_DC_INPUT_VOLTAGE_IS_230_V_AND_THE_OUTPUT_FREQUENCY_IS_50_HZ._FIND_THE_EXPRESSION_FOR_THE_LOAD_VOLTAGE_UP_TO_THE_FIFTH_HARMONIC.?$ |
| A. | 292 sin 314t + 97.62 sin 314t + 58.57 sin 318t + 28.31 sin 318t + 3.686 sin 318t |
| B. | 292 sin 314t + 97.62 sin (3 x 314t) + 58.57 sin (5 x 318t) |
| C. | 292 sin 314t + 97.62 sin (2 x 314t) + 58.57 sin (3 x 318t) + 28.31 sin (4 x 318t) + 3.686 sin (5 x 318t) |
| D. | 292 sin 512t + 25.62 sin 249t + 6.74 sin 508t |
| Answer» C. 292 sin 314t + 97.62 sin (2 x 314t) + 58.57 sin (3 x 318t) + 28.31 sin (4 x 318t) + 3.686 sin (5 x 318t) | |
| 2. |
A_single_phase_full_bridge_inverter_has_RLC_load_with_R_=_4_Ω,_L_=_35_mH_and_C_=_155_μF._The_dc_input_voltage_is_230_V_and_the_output_frequency_is_50_Hz._Find_the_rms_value_of_the_fundamental_load_current.$# |
| A. | 28.31 A |
| B. | 20.02 A |
| C. | 16.69 A |
| D. | 26.90 A |
| Answer» C. 16.69 A | |
| 3. |
For a full bridge inverter with the following load: R = 2 Ω, XL = 8 Ω and XC = 6 Ω?# |
| A. | The output voltage lags the current by 45° |
| B. | The output current lags the voltage by 45° |
| C. | The output current lags the voltage by 90° |
| D. | The output current lags the voltage by more than 90° |
| Answer» C. The output current lags the voltage by 90¬¨¬®‚Äö√†√ª | |
| 4. |
A single phase full bridge inverter is fed from a dc source such that the fundamental component of output voltage = 230 V. Find the rms value of SCR and diode current respectively, for a R load of 2 Ω.$ |
| A. | 115 A, 80 A |
| B. | 81.33 A, 36.2 A |
| C. | 36.2 A, 0 A |
| D. | 81.33 A, 0 A |
| Answer» E. | |
| 5. |
A single phase full bridge inverter circuit, has load R = 2 Ω and dc source Vs = 230 V. Find the value of power delivered to the load in watts only due to the fundamental component of the load current.$ |
| A. | 5361.5 W |
| B. | 2142.5 W |
| C. | 21424.5 W |
| D. | 214.2 W |
| Answer» D. 214.2 W | |
| 6. |
In a half wave circuit, forced commutation is essential when the |
| A. | load is inductive |
| B. | load is resistive |
| C. | source voltage is below 150 V |
| D. | none of the mentioned |
| Answer» C. source voltage is below 150 V | |
| 7. |
In a half wave bridge inverter circuit, the power delivered to the load by each source is given by |
| A. | Vs x Is |
| B. | (Vs x Is)/2 |
| C. | 2(Vs x Is) |
| D. | None of the mentioned |
| Answer» C. 2(Vs x Is) | |
| 8. |
A certain full bridge type inverter circuit has its rms value of fundamental load current component given by W. The fundamental frequency component of the load current would be given by |
| A. | W sin ωt |
| B. | (W/√2) sin ωt |
| C. | √2 W sin ωt |
| D. | sin ωt |
| Answer» D. sin ‚âà√¨‚àö¬¢t | |
| 9. |
A single phase full bridge inverter has load R = 2 Ω, and dc voltage source Vs = 230 V. Find the rms value of the fundamental load current.$ |
| A. | 96 A |
| B. | 0 A |
| C. | 103 A |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 10. |
A single phase full bridge inverter has a dc voltage source Vs = 230 V. Find the rms value of the fundamental component of output voltage. |
| A. | 90 V |
| B. | 207 V |
| C. | 350 V |
| D. | 196 V |
| Answer» C. 350 V | |