1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
A P+-N junction has a built-in potential of 0.8 V. The depletion layer width at a
reverse bias of 1.2V is 2 µm. For a reverse bias of 7.2 V, the depletion layer
width will be:
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
The Zener diode in the regulator circuit shown in figure has a Zener voltage of
5.8 Volts and a Zener knee current of 0.5 mA. The maximum load current drawn
from this circuit ensuring proper functioning over the input voltage range
between 20 and 30 Volts, is
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![GATE ECE 2005 Electronic Devices and VLSI - PN Junction Question 13 English](https://gateclass.cdn.examgoal.net/examside/questions/961f30434f2ff64c4decd62495568e58aeb215bed70106131d2e7a1f9f1dab5f.jpg)
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A Silicon PN junction diode under reverse bias has depletion region of width 10
µm. The relative permittivity of Silicon, ɛr = 11.7 and the permittivity of free space ɛ0 = 8.854 × 10-12 F/m.The depletion capacitance of the diode per square meter is
4
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
At 300 K, for a diode current of 1 mA, a certain germanium diode requires a
forward bias of 0.1435 V. Where as a certain silicon diode requires a forward bias
of 0.718 V. Under the conditions stated above, the closest approximation of the
ratio of reverse saturation current in germanium diode to that in silicon diode is
Questions Asked from PN Junction (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE ECE 2024 (1)
GATE ECE 2022 (1)
GATE ECE 2017 Set 2 (1)
GATE ECE 2016 Set 2 (1)
GATE ECE 2016 Set 3 (1)
GATE ECE 2015 Set 3 (1)
GATE ECE 2015 Set 1 (1)
GATE ECE 2014 Set 2 (1)
GATE ECE 2013 (1)
GATE ECE 2009 (1)
GATE ECE 2007 (1)
GATE ECE 2005 (2)
GATE ECE 2003 (2)
GATE ECE 1993 (1)
GATE ECE 1992 (1)
GATE ECE 1991 (2)
GATE ECE 1987 (1)
GATE ECE Subjects
Signals and Systems
Representation of Continuous Time Signal Fourier Series Discrete Time Signal Fourier Series Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Transmission of Signal Through Continuous Time LTI Systems Discrete Time Linear Time Invariant Systems Sampling Continuous Time Signal Laplace Transform Discrete Fourier Transform and Fast Fourier Transform Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Fourier Transform
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics