Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. Two times Equal to None of the listed here Four times Two times Equal to None of the listed here Four times ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 99% 80 to 90% 95 to 98 % 60 to 90% 99% 80 to 90% 95 to 98 % 60 to 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Very large 3-phase induction motors (greater than 25 HP) are started _____ None of the listed here By auto transformer starting Star-delta starting Direct on line None of the listed here By auto transformer starting Star-delta starting Direct on line ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is ________ Very costly A variable speed motor Not easily maintainable Essentially a constant speed motor Very costly A variable speed motor Not easily maintainable Essentially a constant speed motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The good power factor of an induction motor can be achieved if the average flux density in the air gap is Absent Large Infinity Small Absent Large Infinity Small ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shaft of an induction motor is made of Cast iron Stainless steel High speed steel Carbon steel Cast iron Stainless steel High speed steel Carbon steel ANSWER DOWNLOAD EXAMIANS APP
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