Electrical Machines A generator may loose residual magnetism due to heating. any of these. vibrations. over excitation. heating. any of these. vibrations. over excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will improve and the speed rises. improve and the speed falls. deteriorate and the speed rises. deteriorate and the speed falls. improve and the speed rises. improve and the speed falls. deteriorate and the speed rises. deteriorate and the speed falls. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of a dc motor is given by EbIa2. none of these. EIa. EbIa. EbIa2. none of these. EIa. EbIa. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotives which of the following motor are used ? DC Shunt motor. Synchronous motor. DC compound motor. DC series motor. DC Shunt motor. Synchronous motor. DC compound motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following rotor requires damper winding? None of these Cylindrical rotor. Both type rotor. Salient pole rotor. None of these Cylindrical rotor. Both type rotor. Salient pole rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor uses 4-point starter? DC compound motor. DC shunt motor with field weaking control. DC shunt motor with armature resistance. DC series motor. DC compound motor. DC shunt motor with field weaking control. DC shunt motor with armature resistance. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
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