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. |
The Q-point of the zener diode in the circuit shown below is |
| A. | (0.34 mA, 4 V) |
| B. | (0.34 mA, 4.93 V) |
| C. | (0.94 mA, 4 V) |
| D. | (0.94 mA, 4.93 V) |
| Answer» B. (0.34 mA, 4.93 V) | |
| 2. |
The circuit inside the box in fig. P3.1.31. contains only resistor and diodes. The terminal voltage vo isconnected to some point in the circuit inside the box. The largest and smallest possible value of vo most nearly to is respectively |
| A. | 15 V, 6 V |
| B. | 24 V, 0 V |
| C. | 24 V, 6 V |
| D. | 15 V, 9 V |
| Answer» E. | |
| 3. |
For the circuit shown diode cutting voltage is Vin = 0. The ripple voltage is to be no more than vrip = 4 V. The minimum load resistance, that can be connected to the output is (in kilo ohm) |
| A. | 6.25 |
| B. | 12.5 |
| C. | 25 |
| D. | 30 |
| Answer» B. 12.5 | |
| 4. |
The maximum load current that can be drawn is |
| A. | 1.4 mA |
| B. | 2.3 mA |
| C. | 1.8 mA |
| D. | 2.5 mA |
| Answer» B. 2.3 mA | |
| 5. |
The_time_constant_of_a_series_RL_circuit_(τ)_is_given_by$# |
| A. | R/L |
| B. | L/R |
| C. | RC |
| D. | 1/RL |
| Answer» B. L/R | |
| 6. |
A circuit is so formed such that source-R-L-diode-switch are all in series. Consider the initial current in L to be zero. The diode is so connected that it is forward biased when switch is closed. |
| A. | |
| B. | the current will decay exponentially & the voltage will increase exponentially |
| C. | the current will increase exponentially & the voltage will decay exponentially |
| Answer» C. the current will increase exponentially & the voltage will decay exponentially | |
| 7. |
The time constant of a series RC circuit (τ) is given by$ |
| A. | R/C |
| B. | C/R |
| C. | RC |
| D. | 1/RC |
| Answer» D. 1/RC | |
| 8. |
A circuit is so formed such that the source-R-C-diode-switch are in series. Consider the initial voltage across the C to be zero. The diode is so connected that it is forward biased when the switch is closed. When the switch is closed, |
| A. | the current will decay exponentially & the voltage will increase exponentially |
| B. | the current will increase exponentially & the voltage will increase exponentially |
| C. | the current will fall to zero & the voltage both will decay exponentially |
| D. | the voltage and current both remain constant |
| Answer» B. the current will increase exponentially & the voltage will increase exponentially | |
| 9. |
An ideal diode has _________ &__________ |
| A. | some forward voltage drop, some reverse recovery time |
| B. | high switching losses, high reverse voltage drop |
| C. | no forward voltage drop, negligible reverse recovery time |
| D. | no reverse recovery time, high leakage current |
| Answer» D. no reverse recovery time, high leakage current | |