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FET – 1 – 2

6. The transconductance, gm of a JFET is computed at constant VDS, by the following :

(a) ∆ID/∆VGS
(b) ∆VGS/∆ID
(c) ∆VGSx∆ID
(d) ∆ID/∆VGS+∆IDS

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

7. The pinch-off voltage of JFET has a same magnitude as that of :

(a) Gate voltage
(b) Gate source voltage
(c) Drain–source voltage
(d) None of these

Answer
Answer : (a)

Explanation
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8. The gate cut-off and pinch-off voltages of JFET have :

(a) Same magnitude and sign
(b) Different magnitudes but same sign
(c) Same magnitude but different signs
(d) Different magnitudes and signs

Answer
Answer : (c)

Explanation
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9. The output characteristics of a JFET is similar to :

(a) Triode
(b) Pentode
(c) Thyratron
(d) Tetrode

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

10. For small values of drain to source voltage, JFET behaves like a :

(a) Diode
(b) Capacitor
(c) Inverter
(d) Resistor

Answer
Answer : (d)

Explanation
No answer description available for this question. Let us discuss.

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