8. A 15.9-µF capacitor and a 15.1-mH inductor are connected in parallel. In series with these units are a variable resistor R and an adjustable reactive device X, joined in series. lal Determine the kind and size of device X linductance in henrvs or capacitance in µF) when the circuit is connected to a 50-volt 400-cycle source and is adjusted to resonance (b) For the resonant condition calculate the value of Rif the voltage drop across the paralleled units is to be 100 V

A 650 m, 2-wire d.c. distributor fed from one end is loaded uniformly at the rateof 1-6 A/metre. The resistance of each conductor is 0.0456 ohm per metre. Find the voltage necessary at feed point to maintain 240 V (i) at the far end (ii) at the mid-point of the distributor.

If 3-phase transfomer configuration in figure in has the givens as listed below: E-line on high side = 480V, turns ration = 2:1/coil, resistance per load =10, efficienscy = 100%. E/coil on the high side is _____, E/coil on the low side is___, E-phase on the low side is____, E/resitor of the load is____,(a-480v, b-240v, c-120 d-69.28v) I/resitor on the load is____, I-line on the low side is___, I-phase on the low side is____, I/coil on the low side is____(a-2A b-4A c-6.93 d-12A), I-phase on the high side is____, I-line on the high side is____(a-1A b-1.73A c-2A d-4A), Va/phase of the load is____, 3-phase Va on the high side is____(a-120VA b-360VA c-480VA d-1440VA).

Q.,C