MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
MOSFET from a JFET differs mainly because _____________ |
| A. | of power rating |
| B. | of the output |
| C. | the JFET has a pn junction |
| D. | the MOSFET has two gates |
| Answer» D. the MOSFET has two gates | |
| 2. |
A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, _____________ |
| A. | the voltage gain will increase |
| B. | transconductance will increase |
| C. | voltage gain will decrease |
| D. | the Q-point will shift |
| Answer» D. the Q-point will shift | |
| 3. |
AT_CUT-OFF,_THE_JFET_CHANNEL_IS____________?$ |
| A. | at its widest point |
| B. | completely closed by the depletion region |
| C. | extremely narrow |
| D. | reverse baised |
| Answer» C. extremely narrow | |
| 4. |
MOSFET_from_a_JFET_differs_mainly_because______________$ |
| A. | of power rating |
| B. | of the output |
| C. | the JFET has a pn junction |
| D. | the MOSFET has two gates |
| Answer» D. the MOSFET has two gates | |
| 5. |
A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, ____________? |
| A. | the voltage gain will increase |
| B. | transconductance will increase |
| C. | voltage gain will decrease |
| D. | the Q-point will shift |
| Answer» D. the Q-point will shift | |
| 6. |
The channel of a JFET is between the ________ |
| A. | gate and drain |
| B. | gate and source |
| C. | drain and source |
| D. | input and output |
| Answer» D. input and output | |
| 7. |
If the cross-sectional area of the channel in n-channel JFET increases, the drain current__________ |
| A. | is increased |
| B. | is decreased |
| C. | remains the same |
| D. | decreases exponentially then increase |
| Answer» B. is decreased | |
| 8. |
The output characteristics of a JFET closely resemble the output characteristics of a __________ Valve |
| A. | diode |
| B. | pentode |
| C. | triode |
| D. | tetrode |
| Answer» C. triode | |
| 9. |
The source terminal of a JEFT corresponds to ____________ of a vacuum tube |
| A. | plate |
| B. | cathode |
| C. | grid |
| D. | anode |
| Answer» C. grid | |
| 10. |
The constant-current region of a JFET lies between__________ |
| A. | Cut off and saturation |
| B. | Cut off and pinch off |
| C. | 0 and I<sub>DSS</sub> |
| D. | Cut off and breakdown |
| Answer» E. | |
| 11. |
The transconductance of a JFET ranges from ____________ |
| A. | 100 to 500 mA/V |
| B. | 500 to 1000 mA/V |
| C. | 0.5 to 30 mA/V |
| D. | above 1000 mA/V |
| Answer» D. above 1000 mA/V | |
| 12. |
A transconductance amplifier is also called ___________ |
| A. | current to voltage convertor |
| B. | voltage to current convertor |
| C. | resistor |
| D. | inductor |
| Answer» B. voltage to current convertor | |