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FET – 1 – 10

46. The input gate current of a FET is :

(a) A few amperes
(b) A few milliamperes
(c) A few micro amperes
(d) Negligibly small

ANSWER

EXPLANATION

47. When drain voltage equals the pinch-off voltage, then drain current ……. with the increase in drain voltage.

(a) decreases
(b) increases
(c) remains constant
(d) none of the above

ANSWER

EXPLANATION

48. If the reverse bias on the gate of a JFET is increased, then width of the conducting channel …….

(a) is decreased
(b) is increased
(c) remains the same
(d) none of the above

ANSWER

EXPLANATION

49. A JFET has ……. power gain.

(a) small
(b) very high
(c) very small
(d) none of the above

ANSWER

EXPLANATION

50. The input control parameter of a JFET is …….

(a) gate voltage
(b) source voltage
(c) drain voltage
(d) gate current

ANSWER

EXPLANATION

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