GATE 2022 Rapid Revision Quiz 3

The p-n junction shown below has donor concentration of 450x10¹⁶ cm^-3 and acceptor concentration of 50x10¹⁶ cm^-3. The contact potential is found to be 10 eV. What must be the boundary width(in cm) of the p-n junction? [ ε = 1.5 x 10^-3 F/cm].

Find the output of the given circuit If A+B=Y.

The phase difference between the conduction current and the displacement current for an electric field E is ____________(in degrees)

Determine the voltage V_o  (in V) in the multidiode circuit shown in the figure below.

Two random variables x and y have correlation coefficient 0.3. x has mean of 6 & variance of 16. Y has mean 7 and variance of 25. If variable z is defined as z = x + y, then E[yz] will be _________.

Distance between P and Q is 410 km. Two persons Ram and Shyam having speed of 20 km/hr and 45 km/hr respectively start from P and Q. If Ram starts at 9 o’ clock and Shyam at 10 o’ clock. At what time they will meet?

Let be Fourier transform of x(t), then the value of X(jω) at ω = 0 will be?