Electronics and Communication Engineering - Networks Analysis and Synthesis

21.
A cable has an insulation resistance of 1010 ohms. If the length is doubled, the insulation resistance will be
2 x 1010 Ω
0.5 x 1010 Ω
1010 Ω
4 x 1010 Ω
Answer: Option
Explanation:

Insulation resistance of cable is inversely proportional to length.


22.
, i(t) =
3e-4t - e-5t
3e-4t - 2e-3t
2e-4t - 5e-2t
3e-4t - e-t
Answer: Option
Explanation:

i(t) = 3e-4t - 2e-3t


23.
In the figure shown, A1, A2, A3 are identical Ammeters. If A1 and A3 read 5 and 13 A respectively, reading of A2 will be
8
13 A
18
12 A
Answer: Option
Explanation:

A2 = 132 - 25 12 A.


24.
Which of the following pairs are correctly matched?
  1. Brune's realisation : realisation with ideal transformer.
  2. Cauer realisation : ladder realisation.
  3. Bott Duffin realisation : with non ideal transformer.
Select the answer using the following codes:
1, 2 and 3
2 and 3
1 and 3
1 and 2
Answer: Option
Explanation:

Bott Duffins realisation does not use transformer.


25.
The synthesis of minimum function was suggested by
O'Brune
R. Richards
Bott and Duffin
none of the above
Answer: Option
Explanation:

The procedure is called Brune's synthesis.