Q)
(chatquestion)...25 Marks Questions
50 A device X is connected to an AC source.
V = V, sin ot. The variation of voltage.
current and power in one cycle is shown in
the following graph.
TC
2n ot->
(i) Identify the device X. w
(ii) Which of the curves A, B and C
represent the voltage, current and the
power consumed in the circuit? Justify
the answer.
(iii) How does its impedance vary with
frequency of the AC source? Show
graphically.
(iv) Obtain an expression for the current
in the circuit and its phase relation
with AC voltage. All India 2017
...
