| 1. | For holding the drain current constant inspite of large changes in JFET parameters ? | |
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Current source bias is used
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Reverse bias is used
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Voltage divider bias is used
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No bias is used
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Report Question| 2. | When an input signal reduces the channel size, the process is called ? | |
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enhancement
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substrate connecting
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gate charge
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depletion
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| 3. | In a JFET, gates are always ? | |
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Unbiased
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Reverse biased
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Either forward or reverse biased
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Forward biased
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| 4. | How will electrons flow through a p-channel JFET ? | |
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from source to drain
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from source to gate
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from drain to gate
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from drain to source
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| 5. | In an n-channel JFET, what will happen at the pinch-off voltage ? | |
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the value of VDS at which further increases in VDS will cause no further increase in ID
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the value of VGS at which further decreases in VGS will cause no further increases in ID
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the value of VDG at which further decreases in VDG will cause no further increases in ID
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the value of VDS at which further increases in VGS will cause no further increases in ID
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| 6. | For an n-channel FET, What is the direction of current flow ? | |
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Source to drain
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Drain to source
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Gate to source
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Gate to drain
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| 7. | When applied input voltage varies the resistance of a channel, the result is called ? | |
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saturization
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polarization
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cut-off
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field effect
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| 8. | The main disadvantage of a JFET is ? | |
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Low gain-band width product
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Low gain
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High cost
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High noise level
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| 9. | What is the input impedance of a common-gate configured JFET ? | |
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very low
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low
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high
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very high
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| 10. | The gate input current of a FET is of the order of ? | |
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Amperes
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Microamperes
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Miliamperes
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Hundreds of nano amperes
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