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Question 1
In a junction field-effect transistor (JFET), the current between drain and source is primarily controlled by:
Correct Answer:
The gate-to-source voltage
Question 2
Compared with a bipolar junction transistor (BJT), a major advantage of a JFET is its:
Correct Answer:
Very high input impedance
Question 3
The three terminals of an n-channel JFET are:
Correct Answer:
Gate, drain and source
Question 4
Pinch-off voltage VP of a JFET is the gate-to-source voltage at which, for a given drain–source voltage in the saturation description,
Correct Answer:
The channel is effectively pinched and ID becomes nearly independent of further VDS increase (saturation behaviour)
Question 5
The drain current of an n-channel JFET in the saturation (pinch-off) region is often modelled as ID = IDSS(1 − VGS/VP)². If IDSS = 8 mA and VP = −4 V, the drain current at VGS = −2 V is approximately:
Correct Answer:
2 mA
Question 1
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About this Exam

Prepare with the Karnataka II PUC Electronics (KSEAB) Practice Questions - Karnataka School Examination and Assessment Board (KSEAB) II PUC Class 12 Electronics (Code 40) Exam practice quiz. This question bank includes 100 questions covering amplifier, gain, voltage, feedback, and ideal. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Karnataka II PUC Electronics (KSEAB) Practice Questions - Karnataka School Examination and Assessment Board (KSEAB) II PUC Class 12 Electronics (Code 40) Exam

This practice set contains 100 questions from the matching question bank and focuses on amplifier, gain, voltage, feedback, and ideal. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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