1
GATE ECE 2025
Numerical
+2
-0
A $50 \Omega$ lossless transmission line is terminated with a load $Z_L$ of $(50-j 75) \Omega$. If the average incident power on the line is 10 mW , then the average power delivered to the load (in mW , rounded off to one decimal place) is _________ .
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2
GATE ECE 2025
Numerical
+2
-0
Two resistors are connected in a circuit loop of area $5 \mathrm{~m}^2$, as shown in the figure below. The circuit loop is placed on the $x-y$ plane. When a time-varying magnetic flux, with flux-density $B(t)=0.5 t$ (in Tesla), is applied along the positive $z$-axis, the magnitude of current $I$ (in Amperes, rounded off to two decimal places) in the loop is__________ . GATE ECE 2025 Electromagnetics - Maxwell Equations Question 1 English
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3
GATE ECE 2025
MCQ (More than One Correct Answer)
+1
-0

Which of the following can be used as an n-type dopant for silicon?

Select the correct option(s).

A
Arsenic
B
Boron
C
Gallium
D
Phosphorous
4
GATE ECE 2025
MCQ (Single Correct Answer)
+2
-0.67
The intrinsic carrier concentration of a semiconductor is $2.5 \times 10^{16} / \mathrm{m}^3$ at 300 K . If the electron and hole mobilities are $0.15 \mathrm{~m}^2 / \mathrm{Vs}$ and $0.05 \mathrm{~m}^2 / \mathrm{Vs}$, respectively, then the intrinsic resistivity of the semiconductor (in $\mathrm{k} \Omega . \mathrm{m}$ ) at 300 K is _________ (Charge of an electron $e=1.6 \times 10^{-19} \mathrm{C}$.)
A
1.65
B
1.25
C
0.85
D
1.95
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