Electronics and Communication Engineering - Networks Analysis and Synthesis

1.
A dielectric does not have leakage current.
True
False
Answer: Option
Explanation:

All dielectrics have some leakage current.


2.
A series RLC circuit has a resonant frequency of 1000 Hz. The maximum voltage across C is likely to occur at a frequency of about
1000 Hz
2000 Hz
1025 Hz
975 Hz
Answer: Option
Explanation:

Maximum voltage across capacitance occurs at a frequency slightly less than resonant frequency.


3.
The resistance of a 230 V, 100 W lamp is
529 Ω
2300 Ω
5290 Ω
23 Ω
Answer: Option
Explanation:


4.
System function , For a signal sin 2t, the steady state response is
1/8
0
8
Answer: Option
Explanation:

.


5.
A network has two branches in parallel. One branch contains impedance Z1 and the other branch has impedance Z2. If it is fed from an ac voltage V of frequency f, the current through Z1 depends, on
V, Z1, Z2
V, Z1
Z1, Z2
V, Z1, f
Answer: Option
Explanation:

In parallel branches, the current through any branch depends only on voltage, impedance and frequency only.