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GATE 2024 Subject Name Foundation Quiz 60

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Question 1

In the circuit shown, V₁ = 0 and V₂ = V_dd. The other relevant parameters are mentioned in the figure. Ignoring the effect of channel length modulation and the body effect, the value of I_out is ___________ mA (rounded off to 1 decimal place).

Question 2

Two n-channel MOSFETs, T₁ and T₂, are identical in all respects except that the width of T₂ is double that of T₁. Both the transistors are biased in the saturation region of operation, but the gate overdrive voltage (V_GS-V_TH) of T₂ is double that of T₁, where V_GS and V_TH are the gate – to – source voltage and threshold voltage of the transistors, respectively. If the drain current and transconductance of T₁ are ID₁ and gm₁ respectively, the corresponding values of these two parameters for T₂ are

Question 3

If an n-channel E-MOSFET has

and the over drive voltage required to operate the MOSFET in saturation region is

, then the drain current produced by the E-MOSFET is

Question 4

The small signal equivalent of a MOSFET is given. Calculate the input resistance R_in?

Question 5

Consider the N – MOS transistor baised as shown in the figure given below. The MOSFET parameters are K_N = 1mA/V² V_T = 1.5V and λ = o. The transistor is used as an amplifier, if input signal is V_in = 5 sin(wt) mV, then output voltage V_o will be

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ESE & GATE EC Analog Circuits

May 11ESE & GATE EC