Electronics and Communication Engineering - Networks Analysis and Synthesis

6.
A two terminal black box contains one of the elements R, L, C. The black box is connected to 220 V as supply. The current is I, when a capacitance of 0.1 F is connected in series between the source and box, the current is 2I. The elements is
resistance
inductance
capacitance of 0.5 F
not identifiable form the given data
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Which of the following graphs in figure correctly represents the variation of capacitive reactance with frequency?
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
If Z(s) is positive real, then where k has only positive real values is also positive real. This hypothesis was first given by
O'Brune
R. Richards
Bott and Duffin
P. S. Laplace
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
For a voltage transfer function H(s), realizable by RLC network, the following statements are made
  1. H(s) cannot have a pole at s = 0
  2. H(s) cannot have a pole at s = ± j4
  3. H(s) cannot have a pole at s = ∞
  4. H(s) cannot have a pole at s = + 2
Of these statements
3 and 4 are correct
2 and 4 are correct
1 and 2 are correct
1 and 3 are correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
In figure the effective resistance faced by voltage source is
1 Ω
2 Ω
3 Ω
3.3 Ω
Answer: Option
Explanation:
No answer description is available. Let's discuss.