Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase none of these any of the two machines machine B machine A none of these any of the two machines machine B machine A ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between None of these the supply voltage and the back emf. the rotating stator flux and rotor flux. magnetizing electric current and back emf. None of these the supply voltage and the back emf. the rotating stator flux and rotor flux. magnetizing electric current and back emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has negative speed regulation? Shunt motors. Series motors. Differential compound motors. Both B and C. Shunt motors. Series motors. Differential compound motors. Both B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. decreased. remains same. increased. kept constant to certain value. decreased. remains same. increased. kept constant to certain value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current None of above. Decreases. Increases. Remains unchanged. None of above. Decreases. Increases. Remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Flemings left hand rule. Amperes law. Lenzs law. Flemings right hand rule. Flemings left hand rule. Amperes law. Lenzs law. Flemings right hand rule. ANSWER DOWNLOAD EXAMIANS APP
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