Electrical Machines Synchronising power of a synchronous motor varies All of these directly as synchronous reactances Xs inversely as 1/Xs directly as Xs2 All of these directly as synchronous reactances Xs inversely as 1/Xs directly as Xs2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Same as full load. High. Low. Equal to 1. Same as full load. High. Low. Equal to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of cogging. increase starting torque. reduce chance of crawling. reduce magnetizing current. reduce chance of cogging. increase starting torque. reduce chance of crawling. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following losses are negligible in blocked rotor test? copper loss iron loss mechanical loss both A and B copper loss iron loss mechanical loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding is placed in the armature core pole shoe All of these main field armature core pole shoe All of these main field ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When only armature terminals are reversed. none of above. either field terminals are reversed or armature terminals are reversed. only field terminals are changed. only armature terminals are reversed. none of above. either field terminals are reversed or armature terminals are reversed. only field terminals are changed. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS