Electronics and Communication Engineering - Networks Analysis and Synthesis

31.
A system has transfer function The dc gain is
1
2
5
10
Answer: Option
Explanation:

DC gain, i.e., gain at s = 0 equals


32.
In a series RLC circuit, the current at resonance is I0 the total energy stored in the circuit at resonance is
LI02
2 LI02
2 LI02
0.5 LI2
Answer: Option
Explanation:


33.
If J, I and a denote current density, current and area of cross section of a conductor, then
J = Ia
J = I/a2
J = I/a
J = Ia2
Answer: Option
Explanation:

Current density = current/area of cross-section.


34.
In figure, the short circuit current through terminal AB will be
1.5 A
3 A
2 A
1 A
Answer: Option
Explanation:

Battery current =


35.
If A = 3 + j1, A4
100 ∠18.43°
100 ∠73.72°
10 ∠18.43°
10 ∠73.72°
Answer: Option
Explanation:

A = 3 + j1 = 3.162∠18.43°, A4 = 100∠73.72°.