Electrical Machines The basic function of a transformer is to change the frequency the power level the power factor the level of the voltage the frequency the power level the power factor the level of the voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor, the damper winding is generally used to reduce the eddy currents. prevent hunting and provide the starting torque. reduce noise level only. provide starting torque only. reduce the eddy currents. prevent hunting and provide the starting torque. reduce noise level only. provide starting torque only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is DC. both of above. AC. None of these DC. both of above. AC. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip speed is the half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to armature reaction. presence of commutator. reactance voltage. high resistance of carbon brushes. armature reaction. presence of commutator. reactance voltage. high resistance of carbon brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the function of inter pole in DC generator? To neutralize the distortion of main field flux due to armature reaction. To get a superior commutation. Both option B and C. To serve the economical aspects. To neutralize the distortion of main field flux due to armature reaction. To get a superior commutation. Both option B and C. To serve the economical aspects. ANSWER DOWNLOAD EXAMIANS APP
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