Three Phase Induction Motors Slip rings are usually made of Phospor bronze Aluminium Copper Carbon Phospor bronze Aluminium Copper Carbon ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The reactance of the rotor circuit of a 3-phase induction motor is maximum at Full load Half full load No load Starting Full load Half full load No load Starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If any two phases for an induction motor are interchanged The motor will run at reduced speed The motor will run in reverse direction The motor will burn The motor will not run The motor will run at reduced speed The motor will run in reverse direction The motor will burn The motor will not run ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors 3-phase wound rotor morors are also called _____ motors. Synchronous Commutator Slip ring Series Synchronous Commutator Slip ring Series ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ None of the listed here 65% 90% 40% None of the listed here 65% 90% 40% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors 5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest? 1440 rpm 2880 rpm 1000 rpm 730 rpm 1440 rpm 2880 rpm 1000 rpm 730 rpm ANSWER DOWNLOAD EXAMIANS APP
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