Objective Questions Short notes Objective questions (Answers are given below) In d.c. generators, armature reaction is producedactually by(a) its field current(b) armature conductors(c) field pole winding(d) load current in armature In a d.c. generator, the effect of armature reactionon the main pole flux is to(a) reduce it (b) distort it(c) reverse it (d ) both … Read more
Objective Questions Short notes Objective questions (Answers are given below) The basic requirement of a d.c. armature windingis that it must be(a) a closed one(b) a lap winding(c) a wave winding(d) either (b) or (c) A wave winding must go at least …………around the armature before it closes backwhere it started.(a) once(b) twice(c) thrice(d) four … Read more
Objective Questions Short notes Objective questions (Answers are given below) The method of symmetrical components isvery useful for(a) solving unbalanced polyphase circuits(b) analysing the performance of 3-phaseelectrical machinery(c) calculating currents resulting fromunbalanced faults(d) all of the above An unbalanced system of 3-phase voltageshaving RYB sequence actually consists of(a) a positive-sequence component(b) a negative-sequence component(c) a … Read more