InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to consitute the circuit ?A. only resistorB. Resistor and an inductorC. Resistor and capacitorD. Only a capacitor |
|
Answer» Correct Answer - C::D According to the question, the current increases on increasing the frequency of supply. Hence, the reactance of the circuit must be decreases as increasing frequency. For a capacitive circuit. `X_(C) = 1/(omegaC) = 1/(2pi//C)` Clearly when frequency increases, `X_(C)` decreases. For R-C circuit, `X=sqrt(R^(2)+(1/omegaC)^(2))` When frequency increases X decreases. |
|