Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Supply frequency Number of poles Phase sequence of supply voltage Magnitude of supply voltage Supply frequency Number of poles Phase sequence of supply voltage Magnitude of supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ Leakage reactances are increased Leakage reactances are decreased No load current is decreased None of the listed here Leakage reactances are increased Leakage reactances are decreased No load current is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a 3-phase induction motor is _______ supply voltage. None of the listed here Directly proportional to Independent of Directly proportional to sqaure of None of the listed here Directly proportional to Independent of Directly proportional to sqaure of ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shaft of an induction motor is made of Carbon steel Stainless steel High speed steel Cast iron Carbon steel Stainless steel High speed steel Cast iron ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 80 to 90% 95 to 98 % 60 to 90% 99% 80 to 90% 95 to 98 % 60 to 90% 99% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the frequency of 3-phase supply to the stator of a 3-phase induction motor is increased, then synchronous speed ______ Is increased Is decreased Remains unchanged None of the listed here Is increased Is decreased Remains unchanged None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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