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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 14
21.
The full form of the abbreviations TTL and CMOS in reference to logic families are
Triple Transistor Logic and Chip Metal Oxide Semiconductor
Tristate Transistor Logic and Chip Metal Oxide Semiconductor
Transistor Transistor logic and Complementary Metal Oxide Semiconductor
Trisate Transistor Logic and Complementary Metal Oxide Silicon
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In which one of the following types of analog to digital converts the conversion time is practically independent of the amplitude of the analog signal?
The dual slope integrating type
Successive approximation type
Counter ramp type
Tracking type
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The constraint on r = |z| for which the following non-causal system converges is
|z| < 1/4
|z| < 1/2
|z| < 4
|z| < 2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Consider the following statements:
The conductivity of a metal has negative temperature coefficient since:
  1. The electron concentration increases with temperature.
  2. The electron mobility decreases with temperature.
  3. The electron-lattice scattering rate increases with temperature.
Which of the above statements is/are correct?
1 only
1 and 2
2 and 3
3 only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The Table given below is the mark obtained by 2 students in 8 different subjects.

The regression line of y on x is:
y + 0.57x = 9.7558
y - 0.57x = 9.758
033y + x = 6.335
0.33y - x = 6.335
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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