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1
GATE ECE 2024
MCQ (Single Correct Answer)
+1
-0.33

For non-degenerately doped n-type silicon, which one of the following plots represents the temperature ($T$) dependence of free electron concentration ($n$)?

A
GATE ECE 2024 Electronic Devices and VLSI - Semiconductor Physics Question 6 English Option 1
B
GATE ECE 2024 Electronic Devices and VLSI - Semiconductor Physics Question 6 English Option 2
C
GATE ECE 2024 Electronic Devices and VLSI - Semiconductor Physics Question 6 English Option 3
D
GATE ECE 2024 Electronic Devices and VLSI - Semiconductor Physics Question 6 English Option 4
2
GATE ECE 2024
MCQ (More than One Correct Answer)
+1
-0

The free electron concentration profile $n(x)$ in a doped semiconductor at equilibrium is shown in the figure, where the points A, B, and C mark three different positions. Which of the following statements is/are true?

GATE ECE 2024 Electronic Devices and VLSI - Semiconductor Physics Question 5 English
A

For $x$ between B and C, the electron diffusion current is directed from C to B.

B

For $x$ between B and A, the electron drift current is directed from B to A.

C

For $x$ between B and C, the electric field is directed from B to C.

D

For $x$ between B and A, the electric field is directed from A to B.

3
GATE ECE 2023
MCQ (Single Correct Answer)
+1
-0.33

In a semiconductor, if the Fermi energy level lies in the conduction band, then the semiconductor is known as

A
degenerate n-type.
B
degenerate p-type.
C
non-degenerate n-type.
D
non-degenerate p-type.
4
GATE ECE 2023
MCQ (Single Correct Answer)
+1
-0.33

For an intrinsic semiconductor at temperature $$T=0K$$, which of the following statement is true?

A
All energy states in the valence band are filled with electrons and all energy states in the conduction band are empty of electrons.
B
All energy states in the valence band are empty of electrons and all energy states in the conduction band are filled with electrons.
C
All energy states in the valence and conduction band are filled with holes.
D
All energy states in the valence and conduction band are filled with electrons.
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Questions Asked from Marks 1
GATE ECE 2025 (1) GATE ECE 2024 (2) GATE ECE 2023 (2) GATE ECE 2022 (2) GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 1 (1) GATE ECE 2015 Set 2 (2) GATE ECE 2015 Set 1 (1) GATE ECE 2014 Set 4 (2) GATE ECE 2014 Set 3 (2) GATE ECE 2011 (1) GATE ECE 2008 (1) GATE ECE 2006 (2) GATE ECE 2005 (3) GATE ECE 2004 (1) GATE ECE 2003 (1) GATE ECE 2002 (2) GATE ECE 1997 (1) GATE ECE 1995 (3) GATE ECE 1994 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics