39) For the stable operation of interconnected system, the passive element that can be used as interconnecting element is

40) The insulation resistance of a cable of length 10 km is 1 Mega Ohm, its resistance for 50 km length will be

41) The rate of change of momentum is directly proportional to

42) If four 80 °F capacitors are connected in parallel, the net capacitance is

43) The transformer used to decrease the magnitude of the alternating voltage is a