Electrical Machines Hopkinson test is conducted under which of the following condition? any of the above full load half load no load any of the above full load half load no load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as V² f f² V V² f f² V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to reduce both eddy current and hysteresis loss. increase the permeability. reduce hysteresis loss only. reduce eddy current loss only. reduce both eddy current and hysteresis loss. increase the permeability. reduce hysteresis loss only. reduce eddy current loss only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos α Cos (α/2) Cos α² sin (α/2) Cos α Cos (α/2) Cos α² sin (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum efficiency will occur, when copper loss is_______to iron loss? any of the above equal to greater than less than any of the above equal to greater than less than ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip rings of an induction motors are made of phosphor bronze. stainless steel. aluminium. carbon. phosphor bronze. stainless steel. aluminium. carbon. ANSWER DOWNLOAD EXAMIANS APP