Common Drain & Gate JFET amplifier Gain - MCQs with answers
Q1. Which type of JFET amplifier circuit is also known as 'Source Follower' according to configurational strategic point of view? a. Common Source amplifier
b. Common Drain amplifier
c. Common Gate amplifier
d. None of the above
View Answer / Hide Answer ANSWER: b. Common Drain amplifier
Q2. The voltage gain of common drain JFET amplifier equals to unity only when ______.a. g
mr
dR
L >> ( r
d + R
L )
b. g
mr
dR
L << ( r
d + R
L )
c. g
mr
dR
L is exactly equal to ( r
d + R
L )
d. g
mr
dR
L ≠ ( r
d + R
L )
View Answer / Hide Answer ANSWER: a. gmrdRL >> ( rd + RL )
Q3. Which is the most significant current generating parameter in common drain JFET amplifier?a. g
mV
ib. g
m V
gs c. g
m r
dd. g
m ( 1 + V
gs )
View Answer / Hide Answer Q4. Where is the current source connected in JFET common gate amplifier circuit configuration in the midst of input and output terminals so as to generate the gain of gmVgs ?a. between source and drain terminals
b. between gate and drain terminals
c. between source and gate terminals
d. between source, gate and drain terminals
View Answer / Hide Answer ANSWER: a. between source and drain terminals
