Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 650 W 600 W 625 W 700 W 650 W 600 W 625 W 700 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is cumulatively compounded. differentially compounded. shunt connected. separately excited. cumulatively compounded. differentially compounded. shunt connected. separately excited. 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, 2, 3 and 5 1, 2 and 3 1 and 3 1, 3 and 5 1, 2, 3 and 5 1, 2 and 3 1 and 3 1, 3 and 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Leading power factor. Unity power factor. Lagging power factor. Zero power factor. Leading power factor. Unity power factor. Lagging power factor. Zero power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when rate of change of flux is minimum. shaft rotation is high. rate of change of flux is maximum. induced voltage is high. rate of change of flux is minimum. shaft rotation is high. rate of change of flux is maximum. induced voltage is high. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type level compound. series generator. shunt generator. short - shunt generator. level compound. series generator. shunt generator. short - shunt generator. ANSWER DOWNLOAD EXAMIANS APP
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