Electrical Machines The use of double squirrel cage winding on the rotor provides reduced starting torque. higher efficiency. a large starting torque. low noise. reduced starting torque. higher efficiency. a large starting torque. low noise. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Rotational loss All of these Copper loss Iron loss Rotational loss All of these Copper loss Iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory parallel operation of two transformers which of the following conditions is most essential, MVA rating of all transformer inversely proportional to impedance. percentage impedance of all transformers must be same. voltage ratio of all transformers must be same. polarities of all transformers must be same. MVA rating of all transformer inversely proportional to impedance. percentage impedance of all transformers must be same. voltage ratio of all transformers must be same. polarities of all transformers must be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power flow of a dc motor, with respect to a DC generator is none of these. modified. reversed. increased. none of these. modified. reversed. increased. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip speed is the difference of actual rotor speed and synchronous speed. sum of synchronous and rotor speeds. difference of synchronous speed and actual rotor speed. half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. sum of synchronous and rotor speeds. difference of synchronous speed and actual rotor speed. half of the sum of synchronous and rotor speeds. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 30. 180. 45. 270. 30. 180. 45. 270. ANSWER DOWNLOAD EXAMIANS APP
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