Electrical Machines Hopkinss test in DC motor is conducted at ? Low load. Full load. No load. None of these. Low load. Full load. No load. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop DC motor torque. synchronous motor torque. induction motor torque. induction generator torque. DC motor torque. synchronous motor torque. induction motor torque. induction generator torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The oscillation in a synchronous motor can be damped out by providing damper bars in the rotor pole faces. oscillation cannot be damped. running the motor on leading power factors. maintaining constant excitation. providing damper bars in the rotor pole faces. oscillation cannot be damped. running the motor on leading power factors. maintaining constant excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers flux path completion mechanical protection to the machine produce working flux both A and B flux path completion mechanical protection to the machine produce working flux both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When either field terminals are reversed or armature terminals are reversed. none of above. only field terminals are changed. only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. none of above. only field terminals are changed. only armature terminals are reversed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the motor field terminal. generator field terminal. motor armature terminal. generator armature terminal. motor field terminal. generator field terminal. motor armature terminal. generator armature terminal. ANSWER DOWNLOAD EXAMIANS APP
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