GATE ECE

FET and MOSFET

Analog Circuits

(Past Years Questions)

Marks 1

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In the MOSFET amplifier of the figure the signal output V1 and V2 obey the relationship ...
GATE ECE 1998
An n-channel JFET has IDSS = 1 mA and Vp = -5 V. Its maximum transconductance is ______
GATE ECE 1995
The transit time of a current carriers through the channel of an FET decides its ____________characteristics.
GATE ECE 1994

Marks 2

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The ac schematic of an NMOS common-source stage is shown in the figure below, where part of the biasing circuits has bee...
GATE ECE 2013
An n-channel depletion MOSFET has following two points on its ID - VGS curve: (i)VGS = 0 at Id = 12 mA and (ii)VGS = -...
GATE ECE 2006
Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ Zi and Zo of the circuit are respectively ...
GATE ECE 2005
Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ ID and VDS under DC conditions are respectiv...
GATE ECE 2005
Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ Transconductance in milli-Siemens (mS) and v...
GATE ECE 2005
For an n-channel MOSFET and its transfer curve shown in the figure, the threshold voltage is ...
GATE ECE 2005
The action of a JFET in its equivalent circuit can be best represented as a
GATE ECE 2003
Consider the following statements in connection with the CMOS inverter in the Figure. Where both the MOSFETS are of enha...
GATE ECE 2002
An n-channel JFET has a pinch-off voltage of Vp = -5V. VDS(max) = 20V and gm = 2mA/V. The minimum 'ON' resistance is a...
GATE ECE 1992
The JFET in the circuit shown in fig. has an IDSS = 10mA and Vp = -5V. The value of the resistance Rs for a drain curren...
GATE ECE 1992

Marks 5

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A JEFT with VP = -4V and IDss = 12mA is used in the circuit shown in Fig. Assuming the device to be operating in satu...
GATE ECE 1996
In the JFET circuit shown in Fig assume that R1||R2 = 1 M$$\Omega $$ and the total stray capacitance at the output to ...
GATE ECE 1995
In the MOSFET amplifier shown in the fig. below, the transistor has $$\mu \,\, = \,\,50,\,\,{r_d}\,\, = \,\,10\,K\Omega ...
GATE ECE 1994

Marks 8

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(a) Specify the type of the negative feedback in the JFET amplifier shown in Fig. (b)Calculate the voltage gain (V0/Vi)...
GATE ECE 1987

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