Electrical Machines The power flow of a dc motor, with respect to a DC generator is increased. reversed. modified. none of these. increased. reversed. modified. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start capacitor run motor Capacitor start motor All of these Resistance split phase motor Capacitor start capacitor run motor Capacitor start motor All of these Resistance split phase motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking can be used for compound motors. All of these series motors. shunt motors. compound motors. All of these series motors. shunt motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous condensers are used to improve the power factor improve starting torque All of these reduce hunting improve the power factor improve starting torque All of these reduce hunting ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor None of these. Increase. Decrease. Remains same. None of these. Increase. Decrease. Remains same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging of induction motor occurs at high voltage and when stator and rotor poles are not equal. low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are equal. high voltage and when stator and rotor poles are not equal. low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are equal. ANSWER DOWNLOAD EXAMIANS APP
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