Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by compensating winding and commutating poles. fixing the brush axis inline with the pole axis. shifting the brush axis from GNA to MNA. increasing field excitation. compensating winding and commutating poles. fixing the brush axis inline with the pole axis. shifting the brush axis from GNA to MNA. increasing field excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In field flux method speed control of DC Motor is constant hp drive below the base speed. constant torque drive above the base speed. constant power drive above base speed. constant torque drive below the base speed. constant hp drive below the base speed. constant torque drive above the base speed. constant power drive above base speed. constant torque drive below the base speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of bushing stud. condition of transformer oil. condition of transformer. condition of bushings. condition of bushing stud. condition of transformer oil. condition of transformer. condition of bushings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Demagnetization effects which of the following? both B and C reduces the terminal voltage reduction in main field flux commutation both B and C reduces the terminal voltage reduction in main field flux commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor winding for a 3-phase slip-ring induction motor having delta-connected stator must be connected in star. None of these delta or star according to need. delta. star. None of these delta or star according to need. delta. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the speed of a dc motor increases with load torque, then it is a differentially compounded motor series motor permanent magnet motor comulatively compounded motor differentially compounded motor series motor permanent magnet motor comulatively compounded motor ANSWER DOWNLOAD EXAMIANS APP
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