Electrical Machines The armature mmf of a DC machine has stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A cumulatively compounded dc motor delivers rated load power at rated speed. If the series field is short-circuited, then both armature current Ia and speed ωm increase both decrese Ia increases and ωm decreses Ia remains constant but ωm increase both armature current Ia and speed ωm increase both decrese Ia increases and ωm decreses Ia remains constant but ωm increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On switching a DC motor to DC supply mains, it is found to rotate in the direction opposite to that for which it is designed. The DC motor is Series shunt. Cummulative compound. Differentical compound. have an equal number of electrons and protons. Series shunt. Cummulative compound. Differentical compound. have an equal number of electrons and protons. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 127 A. 173 A. 190 A. 240 A. 127 A. 173 A. 190 A. 240 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 230 V. 115 V. 460 V. 200 V. 230 V. 115 V. 460 V. 200 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected through inductive coupling in parallel in series either of these depending on the design of the motor through inductive coupling in parallel in series either of these depending on the design of the motor ANSWER DOWNLOAD EXAMIANS APP
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