A capacitor of 8μF takes a current of 1 A when the alternating voltage applied across it is 230 V. Calculate: A. The frequency of applied voltage B. The resistance to be connected in series with the capacitor to reduce the current in circuit to 0.5 A at the same frequenc) C. The phase angle of resulting circuit. 1+1+1=3 Marks For the Circuit shown below A. Find the value of ZL in ohm, that will absorb maximum power [in (a+ib) form]. B. Find the Thevenin-equivalent voltage across ZL [in (a+ib) form]. C. Find the maximum power absorbed by ZL. 1+1+2=4 Marks The terminal voltage of a 3H inductor is v=10(1−t)V. Find the current flowing through it at t=4 s and the energy stored in it at t=4 s. Assume i(0) =2 A 1+1=2 Marks Three capacitors C1=2pF,C2=5pF and C3=8pF are connected in parallel across a voltage source of 100V. Determine: a) Total capacitance b) charge on each capacitor c) total energy stored in parallel combination. 3 Marks Find maximum power transferred to the resister R Find ix and vx2+2=4 Marks Find V0 if i=2 A 2Marks Find ix 2Marks The domestic power load in a house comprises the following: 4 lamps of 100 W each, 6 fans of 80 W each, 2 refrigerator of 1/2hp, 2 heater of 1000 W. (a) Calculate the total current taken from the supply of 230 V (b) Calculate the energy consumed in a day, if on an average only a quarter of the above load persists all the time.
