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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 19
26.
If (10)x x (10)x = (100)x; (100)x x (100)x = (10000)x then x can take value :
2
5
10
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Laplace transform of
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In a uniformly doped BJT, assume that NE, NB and NC are the emitter, base and collector dopings in atoms/cm3, respectively. If the emitter injection efficiency of the BJT is close unity, which one of the following conditions is TRUE?
NE = NB = NC
NE >> NB and NB > NC
NE = NB and NB < NC
NE < NB < NC
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Consider the following statements about ultrasonic flow meters:
  1. The measurement in insensitive to viscosity, pressure and temperature variations.
  2. It has bidirectional measuring capability and can be used for any pipe size.
  3. It has a relatively lower cost.
  4. It has good accuracy, fast response and wide frequency range.
Which of the above statements is/are correct?
1 only
1 and 2 only
1, 2 and 4
3 and 4 only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
The number of essential prime implicant for the logic expression
F = ABC + C D A + CDA + ABC + BD
3
5
4
6
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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