Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 2. 6. 8. 4. 2. 6. 8. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Line voltage. Rotor current. Slip. Running torque. Line voltage. Rotor current. Slip. Running torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again the field winding connection must be reversed the armature connection must be reversed the field winding must be replaced field winding must be excited by low voltage dc supply the field winding connection must be reversed the armature connection must be reversed the field winding must be replaced field winding must be excited by low voltage dc supply ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is not found in which motor? Induction motor. DC shunt. DC compound. DC series. Induction motor. DC shunt. DC compound. DC series. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following are variable losses? armature copper loss hysteresis loss shunt field copper loss eddy current loss armature copper loss hysteresis loss shunt field copper loss eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of power factor and dc excitation at constant load power factor and supply voltage during hunting All of these supply voltage and field current at constant excitation power factor and dc excitation at constant load power factor and supply voltage during hunting All of these supply voltage and field current at constant excitation ANSWER DOWNLOAD EXAMIANS APP
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