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 If the excitation of the synchronous generator fails, it acts as a/an induction generator. synchronous motor. synchronous generator. induction motor. induction generator. synchronous motor. synchronous generator. induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Vt vs Ia Vt vs load current Eg vs load current Eg vs Ia Vt vs Ia Vt vs load current Eg vs load current Eg vs Ia ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is not found in which motor? DC series. Induction motor. DC compound. DC shunt. DC series. Induction motor. DC compound. DC shunt. 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 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 field winding must be excited by low voltage dc supply ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for separately excited motors. shunt motors. series motors. differential compound motors. separately excited motors. shunt motors. series motors. differential compound motors. ANSWER DOWNLOAD EXAMIANS APP
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