Electronics and Communication Engineering - Networks Analysis and Synthesis

6.
The current wave in figure is passed through 3 H inductor. The voltage across inductance during the period 2 < t < 3 seconds is
12 V
- 12 V
6 V
- 6 V
Answer: Option
Explanation:


7.
In figure, the charge on 0.8 μF capacitor is
100 μC
50 μC
40 μC
20 μC
Answer: Option
Explanation:

Each of parallel combination of capacitors is equal to 1 μF. Therefore, voltage across each capacitor is 50 V. Q = 0.8 x 50 = 40 μC.


8.
Maximum power transfer theorem finds application in
power circuits
distribution circuits
communication circuits
both power and communication circuits
Answer: Option
Explanation:

In power and distribution circuits efficiency has to be very high.


9.
In a series L-C circuit fed by ac voltage, voltage drops across L and C are 40 V and 30 V respectively. The supply voltage is
70 V
10 V
50 V
1.333 V
Answer: Option
Explanation:

|V| = IXL - IXC.


10.
In a reactance function
all poles are simple
all poles and zeros are simple
all poles and zeros are simple and lie on jω axis only
all poles and zeros lie on negative real axis
Answer: Option
Explanation:

Only then the network has only L and C. If poles and zeros are not on jω axis, resistance will be there.