Permeability is the inverse equivalent of the electrical term

36) When an a.c. power is applied to a reactive load, then the voltage is

37) The power subcircuits are made in such a manner that they do not need to carry a load of more than

38) 1 metric horsepower (1 HP) is equal to

39) Two forces 10 N and 15 N act at a point. If angle between the line of action of the forces is 60 %, then magnitude of result force is