Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is cumulatively compounded. deferentially compounded. series connected. shunt connected. cumulatively compounded. deferentially compounded. series connected. shunt connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? both A and B (1-K) × input power None of these K × input power both A and B (1-K) × input power None of these K × input power ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? Auto transformer starter. All of these. DOL starter. Star-delta starter. Auto transformer starter. All of these. DOL starter. Star-delta starter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called slip. skewing. cogging. crawling. slip. skewing. cogging. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Induced emf. Armature current. Mechanical power. Can not be determined. Induced emf. Armature current. Mechanical power. Can not be determined. ANSWER DOWNLOAD EXAMIANS APP
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