Electrical Machines The overall power factor of an on load transformer depends on the power factor of the load. is always lagging. is always unity. is always leading. depends on the power factor of the load. is always lagging. is always unity. is always leading. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is 1 : 1. N1 : N2. none. N12 : N22. 1 : 1. N1 : N2. none. N12 : N22. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is rectangular. sinusoidal. triangular. pulsating. rectangular. sinusoidal. triangular. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following windings are necessary in case of all dc machines? lap winding closed winding open type winding wave winding lap winding closed winding open type winding wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Winding conductors of an electrical power transformer are mainly insulated by wooden insulation. cotton insulation. paper insulation. rubber insulation. wooden insulation. cotton insulation. paper insulation. rubber insulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard system, the lower limit of the speed imposed by Residual magnetism of the generator. Armature resistance. None of above. Field resistance. Residual magnetism of the generator. Armature resistance. None of above. Field resistance. ANSWER DOWNLOAD EXAMIANS APP
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