Electronics and Communication Engineering - Networks Analysis and Synthesis

36.
The current wave of figure, is passed through a 3 H inductor during the period 0 to 2 seconds
is 3 V
is 6 V
increases from 0 at t = 0 to 6 V at t = 2 seconds
increases from 0 at t = 0 to 6 V at t = 2 seconds and then decreases
Answer: Option
Explanation:


37.
The minimum number of equations required to analyze the circuit shown in the figure is
3
4
6
7
Answer: Option
Explanation:

No. of loop = No. of equations = b - n + 1 7 - 4 + 1 4.


38.
If Z(s) has a pole at origin, the realization leads to
a resistance in series
an inductance in series
a capacitance in series
a resistance or capacitance in series
Answer: Option
Explanation:

In such a function the denominator is one degree higher than the numerator.

Therefore we get a term . Hence, the network has capacitance in series.


39.
A series resonant circuit has inductance L. If L is increased, the resonant frequency
increases
decreases
remains constant
may increases or decreases
Answer: Option
Explanation:

. As L increases ωr decreases.


40.
In a coupled coil the primary has 100 turns and secondary has 200 turns. The primary produces, a flux Φ = e-t. The coefficient of coupling is 1. The voltages induced in secondary is
200 e-t V
200 et V
200 V
none of the above
Answer: Option
Explanation: