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GATE 2025 Analog Electronics Quiz 64
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Question 1
In a current amplifier, it is desirable to have
Question 2
In the circuit shown in the figure, transistor M1 is in saturation and has transconductance gm = 0.01 siemens. Ignoring internal parasitic capacitances and assuming the channel length modulation 
to be zero, the small signal input pole frequency (in kHz) is.
to be zero, the small signal input pole frequency (in kHz) is. Question 3
Consider the circuit shown in figure
The circuit 2 is equivalent of circuit 1, the
MOSFET of circuit 1 is replaced by its Thevenin’s equivalent in circuit and thus circuit 1 reduces to a common gate circuit. The value of 
will be. (Assuming the trans conductance of the two MOSFET are 
and 
and the 
be 
and 
respectively)
The circuit 2 is equivalent of circuit 1, the
MOSFET of circuit 1 is replaced by its Thevenin’s equivalent in circuit and thus circuit 1 reduces to a common gate circuit. The value of will be. (Assuming the trans conductance of the two MOSFET are and and the be and respectively) Question 4
For a common-source amplifier with source degeneration, considering 
which of the following is true, where 
is the transconductance without source degeneration, 
is the transconductance with source degeneration, 
is the source degeneration resistance?
which of the following is true, where is the transconductance without source degeneration, is the transconductance with source degeneration, is the source degeneration resistance? Question 5
In the figure shown below
If
then the value of the (W/L) ratio 
to make it a unity gain inverting amplifier is _________. (Assume 
)
If
then the value of the (W/L) ratio to make it a unity gain inverting amplifier is _________. (Assume ) Question 6
Consider the source-follower circuit in fig. The values of parameter are
mS and 
The voltage gain
is:-
mS and The voltage gain
is:- - 138 attempts
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Apr 6ESE & GATE EE
