InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
The charging time constant of a circuit consisting of an inductor is the time taken for the voltage in the inductor to become __________ % of the initial voltage.(a) 33(b) 63(c) 37(d) 36I had been asked this question during an interview for a job.My question is from Growth in an Inductive Circuit in chapter Inductance in a DC Circuit of Basic Electrical Engineering |
|
Answer» RIGHT answer is (c) 37 For explanation: We know that: V=V0(1-e^-tR/L). When time CONSTANT=t, we have: V=V0(1-e^-1) = 0.37*V0. Hence the time constant is the time TAKEN for the charge in an inductive CIRCUIT to become 0.37 TIMES its initial charge. |
|