Electrical Machines If the temperature of armature resistance is increased, the speed of a series motor would decrease. None of above. not change. increase. decrease. None of above. not change. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for reducing armature reaction. All of these mechanical balancing. increasing efficiency. reducing armature reaction. All of these mechanical balancing. increasing efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the armature windings are placed on the rotor because of the necessity for electromechanical energy conversion development of torque generation of voltage commutation electromechanical energy conversion development of torque generation of voltage commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf of a DC machine has stepped distribution and rotates at the speed of armature. triangular space distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. stepped distribution and rotates at the speed of armature. triangular space distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of crawling. reduce chance of cogging. increase starting torque. reduce magnetizing current. reduce chance of crawling. reduce chance of cogging. increase starting torque. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 24°. 10°. 30°. 45°. 24°. 10°. 30°. 45°. ANSWER DOWNLOAD EXAMIANS APP
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