Electronics and Communication Engineering - Networks Analysis and Synthesis

16.

Assertion (A): In an R-L circuit having low resistance, current lags the voltage by nearly 90°.

Reason (R): Power factor of a series RL circuit is R/Z.

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.

17.
Two coils are so wound that 60% of the flux of one links the other. The coefficient of coupling is
1.67
0.6
0.36
0.216
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
In the graph of figure, the total number of trees is
4
5
6
8
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
In a sine wave, maximum rate of change of voltage occurs at
ascent of the waveform
+ ve maximum
- ve maximum
between maximum and minimum
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
Which of the following statements is incorrect?
A mesh with two resistors has two mesh currents
The algebraic sum of all voltages around any mesh or any loop must be zero
The principle node is a function where branch current can divide or combine
A Norton is a series circuit
Answer: Option
Explanation:
No answer description is available. Let's discuss.