Electrical Machines Hopkinson test is conducted under which of the following condition? no load full load half load any of the above no load full load half load any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along quadrature axis and interpolar axis quadrature axis and direct axis direct axis and indirect axis direct axis and interpolar axis quadrature axis and interpolar axis quadrature axis and direct axis direct axis and indirect axis direct axis and interpolar axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of efficiency. ratio of input to output voltage. ratio of starting to running torque. ratio of starting to running current. efficiency. ratio of input to output voltage. ratio of starting to running torque. ratio of starting to running current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A frog leg winding is used in a DC machine to eliminate the use of compensating winding. reactance voltage produced due to communication. the use equalizer in lap winding. the use drum winding. the use of compensating winding. reactance voltage produced due to communication. the use equalizer in lap winding. the use drum winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are 1, 3 and 5 1, 2, 3 and 5 1 and 3 1, 2 and 3 1, 3 and 5 1, 2, 3 and 5 1 and 3 1, 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto-transformer, power is transferred through both A and B. induction process only. conduction process only. None of these both A and B. induction process only. conduction process only. None of these ANSWER DOWNLOAD EXAMIANS APP
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