Electrical Machines DC Motor dc series motor. dc shunt motor with field weakening. dc shunt with armature resistance control. dc compound motor. dc series motor. dc shunt motor with field weakening. dc shunt with armature resistance control. dc compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1, 2 and 3 1 and 3 1 and 2 2 alone 1, 2 and 3 1 and 3 1 and 2 2 alone ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is equal as power transformer. lesser than power transformer. higher than power transformer. none of these. equal as power transformer. lesser than power transformer. higher than power transformer. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux is maximum in the following part of a DC motor: under the interpole. under trailing pole tip. pole core. under leading pole tip. under the interpole. under trailing pole tip. pole core. under leading pole tip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main purpose of providing tertiary winding in a three phase transformer is to carry extra load. to suppress harmonic and unbalance in voltage. None of these to interconnect three voltage systems. to carry extra load. to suppress harmonic and unbalance in voltage. None of these to interconnect three voltage systems. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? below rated speed None of these both A and B above rated speed below rated speed None of these both A and B above rated speed ANSWER DOWNLOAD EXAMIANS APP
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