Electrical Machines The slip of an induction motor normally does not depend on rotor speed. synchronous speed. shaft torque. core loss component. rotor speed. synchronous speed. shaft torque. core loss component. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, the no-load slip is generally equal to 4 %. less than 1 %. 1.5 %. zero. 4 %. less than 1 %. 1.5 %. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the armature electric current is increased to double its previous value, and the time of commutation is halved, how will the reactance voltage vary? It will remain the same. It will be halved. It will be doubled. It will becomes four times. It will remain the same. It will be halved. It will be doubled. It will becomes four times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 + s. 2 - s. s. 1 - s. 2 + s. 2 - s. s. 1 - s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to reduce eddy current loss only. reduce hysteresis loss only. increase the permeability. reduce both eddy current and hysteresis loss. reduce eddy current loss only. reduce hysteresis loss only. increase the permeability. reduce both eddy current and hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of DC motor Back emf increase but line current falls. Both back emf as well as line current fall. Both back emf as well as line current increase. Back emf falls and line current increase. Back emf increase but line current falls. Both back emf as well as line current fall. Both back emf as well as line current increase. Back emf falls and line current increase. ANSWER DOWNLOAD EXAMIANS APP
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