MCQOPTIONS
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MCQOPTIONS
This section includes 9 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 diode B-2 rectifier is fed from a 250 V, 50 Hz source & connected to a load of R = 400 Ω.Design a capacitor filter such that the ripple factor of the output voltage is less than 5 %. Find the value of the capacitance of the C filter. |
| A. | 156.4 μF |
| B. | 500 μF |
| C. | 189 μF |
| D. | 246 μF |
| Answer» D. 246 μF | |
| 2. |
For the below given circuit,When the output current rises, the capacitor current |
| A. | is increasing |
| B. | is decreasing |
| C. | is constant |
| D. | is zero |
| Answer» C. is constant | |
| 3. |
When a certain type of filter is connected across the R load of a full wave bridge type diode biased rectifier, the following output voltage waveform is obtainedThe filter connected is most likely to be a/an |
| A. | L filter |
| B. | C filter |
| C. | LC filter |
| D. | None of the above mentioned |
| Answer» C. LC filter | |
| 4. |
Examine the below shown circuit.While D7 & D10 are reversed biased the |
| A. | capacitor is charging through Vs |
| B. | capacitor is discharging through Vs |
| C. | capacitor is charging through R |
| D. | capacitor is discharging through R |
| Answer» E. | |
| 5. |
A capacitor filter or C filter can be used in a rectifier by connecting it |
| A. | in parallel with the load |
| B. | in series with the load |
| C. | in parallel with the supply |
| D. | in series with the supply |
| Answer» B. in series with the load | |
| 6. |
In case of a C filter, the AC is not allowed to pass to the load by |
| A. | offering it high impedance |
| B. | offering it low impedance |
| C. | short circuiting the AC component |
| D. | open circuiting the AC component |
| Answer» D. open circuiting the AC component | |
| 7. |
In case of an L filter connected with a rectifier in series with the load, it offers ________ impedance to ac whereas _______ resistance to dc respectively. |
| A. | high, high |
| B. | high, low |
| C. | low, high |
| D. | low, low |
| Answer» C. low, high | |
| 8. |
An L filter is connected ________ |
| A. | in series |
| B. | in parallel |
| C. | in both series and parallel |
| D. | none of the mentioned |
| Answer» B. in parallel | |
| 9. |
In practice the output from the diode rectifier has |
| A. | AC component only |
| B. | DC component only |
| C. | AC + DC component |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |