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FET – 1 – 6

26. Consider the statements given below :
Statement I : In FET the generator current is proportional to the input voltage.
Statement II : In BJT, the generator current is proportional to the input current.
Which of the following is valid ?

(a) Statement I
(b) Statement II
(c) Both statements I & II
(d) Either statement I or II

ANSWER

EXPLANATION

27. FETs are used in an amplifier to obtain :

(a) Low input impedance
(b) Low output impedance
(c) High input impedance
(d) High output impedance

ANSWER

EXPLANATION

28. Which of the following exhibits very high input impedance ?

(a) Diode
(b) P-N-P
(c) N-P-N
(d) FET

ANSWER

EXPLANATION

29. …….. indicates how effectively the input voltage controls the output current in a JFET.

(a) Slow rate
(b) Transconductance
(c) Transresistance
(d) Intrinsic stand-off ratio

ANSWER

EXPLANATION

30. ……… is preferred form of bias for a JFET amplifier.

(a) Self bias
(b) Voltage divider bias
(c) Two supply bias
(d) Emitter feedback bias

ANSWER

EXPLANATION

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