Electronics and Communication Engineering - Networks Analysis and Synthesis

21.
In a circuit with capacitance connected to ac source, the rate of change of capacitor voltage is constant.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.

Assertion (A): If Z1(s) and Z2(s) are positive real then Z1(s) + Z2(s) as well as 1/Z1(s) and 1/Z2(s) are positive real.

Reason (R): The poles of a positive real function are real or occur in conjugate pairs.

Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
A variable resistance R and capacitive reactance XC are connected in series. As R is varied, the locus of Z is
a straight line parallel to Y axis in 4th quadrant
a straight line parallel to X axis in 4th quadrant
a straight line parallel to Y axis in second quadrant
a straight line parallel to Y axis in first quadrant
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
The dual of a node is
mesh
principal node
tree branch
link
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
At t = 0+, the current i1 is
- V/2R
- V/4R
- V/R
zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.