MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A shunt capacitor of value 500µF fed rectifier circuit. The dc voltage is 14.43V. The dc current flowing is 200mA. It is operating at a frequency of 50Hz. What will be the value of peak rectified voltage? |
| A. | 18.67V |
| B. | 16.43V |
| C. | 15.98V |
| D. | 11.43V |
| Answer» C. 15.98V | |
| 2. |
The rms ripple voltage (Vrms) of a shunt filter is_________ |
| A. | IDC/2√3 |
| B. | IDC2√3 |
| C. | IDC/√3 |
| D. | IDC√3 |
| Answer» B. IDC2√3 | |
| 3. |
A full wave rectifier uses a capacitor filter with 500µF capacitor and provides a load current of 200mA at 8% ripple. Calculate the dc voltage. |
| A. | 15.56V |
| B. | 20.43V |
| C. | 11.98V |
| D. | 14.43V |
| Answer» E. | |
| 4. |
A 100µF capacitor when used as a filter has 15V ac across it with a load resistor of 2.5KΩ. If the filter is the full wave and supply frequency is 50Hz, what is the percentage of ripple frequency in the output? |
| A. | 2.456% |
| B. | 1.154% |
| C. | 3.785% |
| D. | 3.675% |
| Answer» C. 3.785% | |
| 5. |
A half wave rectifier, operated from a 50Hz supply uses a 1000µF capacitance connected in parallel to the load of rectifier. What will be the minimum value of load resistance that can be connected across the capacitor if the ripple% not exceeds 5? |
| A. | 114.87Ω |
| B. | 167.98Ω |
| C. | 115.47Ω |
| D. | 451.35Ω |
| Answer» D. 451.35Ω | |
| 6. |
THE_RMS_RIPPLE_VOLTAGE_(VRMS)_OF_A_SHUNT_FILTER_IS_________?$ |
| A. | I<sub>DC</sub>/2‚àö3 |
| B. | I<sub>DC</sub>2‚àö3 |
| C. | I<sub>DC</sub>/‚àö3 |
| D. | I<sub>DC</sub>‚àö3 |
| Answer» B. I<sub>DC</sub>2‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ3 | |
| 7. |
A_shunt_capacitor_of_value_500µF_fed_rectifier_circuit._The_dc_voltage_is_14.43V._The_dc_current_flowing_is_200mA._It_is_operating_at_a_frequency_of_50Hz._What_will_be_the_value_of_peak_rectified_voltage?$# |
| A. | 18.67V |
| B. | 16.43V |
| C. | 15.98V |
| D. | 11.43V |
| Answer» C. 15.98V | |
| 8. |
Which of the following are true about capacitor filter? |
| A. | It is also called as capacitor output filter |
| B. | It is electrolytic |
| C. | It is connected in parallel to load |
| D. | It helps in storing the magnetic energy |
| Answer» C. It is connected in parallel to load | |
| 9. |
The charge (q) lost by the capacitor during the discharge time for shunt capacitor filter. |
| A. | I<sub>DC</sub>*T |
| B. | I<sub>DC</sub>/T |
| C. | I<sub>DC</sub>*2T |
| D. | I<sub>DC</sub>/2T |
| Answer» B. I<sub>DC</sub>/T | |
| 10. |
A full wave rectifier uses a capacitor filter with 500µF capacitor and provides a load current of 200mA at 8% ripple. Calculate the dc voltage.$ |
| A. | 15.56V |
| B. | 20.43V |
| C. | 11.98V |
| D. | 14.43V |
| Answer» E. | |
| 11. |
A 100µF capacitor when used as a filter has 15V ac across it with a load resistor of 2.5KΩ. If the filter is the full wave and supply frequency is 50Hz, what is the percentage of ripple frequency in the output?$ |
| A. | 2.456% |
| B. | 1.154% |
| C. | 3.785% |
| D. | 3.675% |
| Answer» C. 3.785% | |
| 12. |
A half wave rectifier, operated from a 50Hz supply uses a 1000µF capacitance connected in parallel to the load of rectifier. What will be the minimum value of load resistance that can be connected across the capacitor if the ripple% not exceeds 5?$ |
| A. | 114.87Ω |
| B. | 167.98Ω |
| C. | 115.47Ω |
| D. | 451.35Ω |
| Answer» D. 451.35‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 13. |
The rectifier current is a short duration pulses which cause the diode to act as a_________ |
| A. | Voltage regulator |
| B. | Mixer |
| C. | Switch |
| D. | Oscillator |
| Answer» D. Oscillator | |
| 14. |
The cut-in point of a capacitor filter is_________ |
| A. | The instant at which the conduction starts |
| B. | The instant at which the conduction stops |
| C. | The time after which the output is not filtered |
| D. | The time during which the output is perfectly filtered |
| Answer» B. The instant at which the conduction stops | |
| 15. |
In a shunt capacitor filter, the mechanism that helps the removal of ripples is_________ |
| A. | The current passing through the capacitor |
| B. | The property of capacitor to store electrical energy |
| C. | The voltage variations produced by shunting the capacitor |
| D. | Uniform charge flow through the rectifier |
| Answer» C. The voltage variations produced by shunting the capacitor | |