Electronics - RL Circuits - Discussion

Discussion Forum : RL Circuits - Filling the Blanks (Q.No. 1)
1.

If the resistance is larger than the inductive reactance in the given circuit, the phase angle is _______.

less than 0°
between 0° and 45°
between 45° and 0°
greater than 90°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Chandan said:   1 decade ago
Let us assume resistance is infinity than tan-(xl/infinity) that is tan-(0) so it is zero. and in second case assume r=xl than tan-(1) that is 45 degree.

So answer is 0degree and 45degree

Asma asghar janjua said:   9 years ago
z^2 = r^2 + xl^2.

According to Pythagoras theorem,
h^2 = b^2 + p^2.
angle = tan^-1(xl/r).

Then, we get the answer.

Deepak said:   1 decade ago
angle is tan^-1=xL/r,
r<1forangle0-45

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