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GATE 2022 Boost up Quiz 2.0
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Question 1
The current I in a forward biased p+n junction shown in figure (a) is entirely due to diffusion of hole from x=0 to x=L. The injected hole concentration distribution in the region is linear as following figure (b) with p(0) = 1012 cm3 and L = 10–3 cm
The current density in the diode assuming that the diffusion coefficient is 12 cm2/sec
Question 2
Taylor series expansion of around has the form
The coefficient (correct to two decimal places) is equal to ____________.
Question 3
All the logic gates shown in the figure have a propagation delay of 20 ns. Let A = C = 0 and B = 1 until time t = 0. At t = 0, all the inputs flip (i.e., A = C = 1 and B = 0) and remain in that state. For t > 0, output Z = 1 for a duration (in ns) of _________.
Question 4
Consider the following network
Question 5
Refer the following figure to find the value of ICQ and VCEQ. R2=R4=4kΩ, R3=2kΩ and VCC=12V. Assume VBE=0.7V.
Question 6
The switch in the circuit, shown in the figure, was open for a long time and is closed at t = 0.
The current i(t) (in ampere) at t = 0.5 seconds is ________
The current i(t) (in ampere) at t = 0.5 seconds is ________
Question 7
A state-space representation of a system is given by
The time response of this system will be
Question 8
For a LTI system shown below
The input random process X(τ) is RX(τ) = , given ; ∝, β are constant, u(τ) is unit step function. The PSD of output process y(t), will be
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ESE & GATE ECGeneralDec 11ESE & GATE EC