1
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
For the circuit shown in the following figure, transistors M1 and M2 are identical NMOS transistors. Assume that M2 is in saturation and the output is unloaded GATE ECE 2008 Electronic Devices and VLSI - IC Basics and MOSFET Question 34 English The current Ix is related to Ibias as
A
$$I_x\;=I_{bias}\;+\;I_s$$
B
$$I_x\;=I_{bias}\;$$
C
$$I_x\;=I_{bias}\;-\;I_s$$
D
$$I_x\;=I_{bias}\;\left(V_{DD}\;-\frac{V_{out}}{R_E}\right)$$
2
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the CMOS inverter circuit shown, if the transconductance parameters of the NMOS and PMOS transistors are
Kn = Kp = μnCOX$$\frac{W_n}{L_n}$$ = μpCOX$$\frac{W_P}{L_P}$$= 40 μA/V2 and their threshold voltages are VT = 1 V, the current I is: GATE ECE 2007 Electronic Devices and VLSI - IC Basics and MOSFET Question 36 English
A
0 A
B
25 μA
C
45 μA
D
90 μA
3
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
An n-channel depletion MOSFET has following two points on its ID − VGS curve:
(i) VGS = 0 at ID = 12 mA and
(ii) VGS = - 6 Volts at ID = 0
Which of the following Q-points will give the highest trans-conductance gain for small signals?
A
VGS = -6 Volts
B
VGS = -3 Volts
C
VGS = 0 Volts
D
VGS = 3 Volts
4
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
The drain of an n-channel MOSFET is shorted to the gate so that VGS = VDS. The threshold voltage (VT) of MOSFET is 1 V. If the drain current (ID) is 1 mA for VGS = 2 V, then for VGS = 3 V, ID is
A
2 mA
B
3 mA
C
9 mA
D
4 mA

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