Electrical Machines A DC generator can be considered as rotating amplifier. power pump. rectifier. prime mover. rotating amplifier. power pump. rectifier. prime mover. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? both A and B above rated speed below rated speed None of these both A and B above rated speed below rated speed None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 250 A. 340 A. 460 A. 570 A. 250 A. 340 A. 460 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on shaft torque. synchronous speed. core loss component. rotor speed. shaft torque. synchronous speed. core loss component. rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again field winding must be excited by low voltage dc supply the field winding must be replaced the field winding connection must be reversed the armature connection must be reversed field winding must be excited by low voltage dc supply the field winding must be replaced the field winding connection must be reversed the armature connection must be reversed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer action requires a alternating magnetic lux. constant magnetic flux. alternating electric flux. increasing magnetic flux. alternating magnetic lux. constant magnetic flux. alternating electric flux. increasing magnetic flux. ANSWER DOWNLOAD EXAMIANS APP
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