Electrical Machines In alternator, the rotary part is magnetic field poles. none of these. core. armature. magnetic field poles. none of these. core. armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating magnetic field is produced in an induction motor because of None of these rotor winding. stator winding. either stator winding or rotor winding. None of these rotor winding. stator winding. either stator winding or rotor winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current Remains unchanged. Decreases. None of above. Increases. Remains unchanged. Decreases. None of above. Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to reduce hysteresis loss only. reduce eddy current loss only. increase the permeability. reduce both eddy current and hysteresis loss. reduce hysteresis loss only. reduce eddy current loss only. increase the permeability. reduce both eddy current and hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 - s. 1 - s. s. 2 + s. 2 - s. 1 - s. s. 2 + s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, A is bigger than B for the same voltage rating B is bigger than A for the same current rating both are of the same size for the same current rating A is bigger than B for the same current rating A is bigger than B for the same voltage rating B is bigger than A for the same current rating both are of the same size for the same current rating A is bigger than B for the same current rating ANSWER DOWNLOAD EXAMIANS APP
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