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Exam Details

Electronics & Communication Engineering 2009

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Questions 60
Duration 180 mins
Package ESE & GATE EC - Previous Year Papers

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Difficulty distribution

Medium 46 76.7%
Hard 11 18.3%
Easy 3 5%

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Multiple Choices 60 100%

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1
2009 · Unclassified
Electronics & Communication Engineering 2009
The order of the differential equation is
A
1
B
2
C
4
D
3
2
2009 · Unclassified
Electronics & Communication Engineering 2009
The Fourier series of a real periodic function has only P. cosine terms if it is even Q. sine terms if it is even R. cosine terms if it is odd S. sine terms if it is odd Which of the above statements are correct?
A
P and S
B
Q and S
C
Q and R
D
P and R
3
2009 · Unclassified
Electronics & Communication Engineering 2009
A function is given by . Which of the following is true?
A
f has frequency components at 0 and 1/2∏ Hz
B
f has frequency components at 0 and 1/∏ Hz
C
f has frequency components at 0, 1/2∏ and 1/∏ Hz
D
f has frequency components at 1/2∏ and 1/∏ Hz
4
2009 · Unclassified
Electronics & Communication Engineering 2009
A fully charged mobile phone with a 12 V battery is good for a 10 minute talk-time. Assume that during the talk-time, the battery delivers a constant current of 2 A and its voltage drops linearly from 12 V to 10 V as shown in the figure. How much energy does the battery deliver during this talk-time?
A
220 J
B
12 J
C
13.2 kJ
D
14.4 kJ
5
2009 · Unclassified
Electronics & Communication Engineering 2009
In an n-type silicon crystal at room temperature, which of the following can have a concentration of 4 × 1019 cm-3?
A
Silicon atoms
B
Holes
C
Dopant atoms
D
Valence electrons
6
2009 · Unclassified
Electronics & Communication Engineering 2009
The full forms of the abbreviations TTL and CMOS in reference to logic families
A
Triple Transistor Logic and Chip Metal Oxide Semiconductor
B
Tristate Transistor Logic and Chip Metal Oxide Semiconductor
C
Transistor Transistor Logic and Complementary Metal Oxide Semiconductor
D
Tristate Transistor Logic and Complementary Metal Oxide Silicon