Electrical Machines In travelling cranes for swing action which motor is preferred? Capacitor type induction motors. Reluctance motor. DC series motor. AC slip ring IM. Capacitor type induction motors. Reluctance motor. DC series motor. AC slip ring IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to reduce eddy current loss only. 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. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound motor has only shunt field winding. tertiary winding. both shunt and series field winding. only series field winding. only shunt field winding. tertiary winding. both shunt and series field winding. only series field winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be less than core loss. equal to core loss. more than core loss. zero. less than core loss. equal to core loss. more than core loss. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which method is less recommendable for induction motor starting in the industries? Stator resistance starting. Direct online starting. Auto transformer starting. Rotor resistance starting. Stator resistance starting. Direct online starting. Auto transformer starting. Rotor resistance starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. has no relation. directly. inversely. none of these. has no relation. directly. inversely. none of these. ANSWER DOWNLOAD EXAMIANS APP
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