Three Phase Induction Motors Slip of an induction motor is negative when Magnetic field and rotor rotate in opposite direction None of these Rotor speed is more than the synchronous speed of the field and are in the same direction Rotor speed is less than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction None of these Rotor speed is more than the synchronous speed of the field and are in the same direction Rotor speed is less than the synchronous speed of the field and are in the same direction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque in an induction motor depends on All of the listed here Rotor inductive reactance Frequency Square of supply voltage All of the listed here Rotor inductive reactance Frequency Square of supply voltage 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 % 99% 60 to 90% 80 to 90% 95 to 98 % 99% 60 to 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ Speed control is required High starting torque is required Less costly motor is not required High rotor resistance is required during running Speed control is required High starting torque is required Less costly motor is not required High rotor resistance is required during running ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When a 3-phase induction motor is at no load, the slip is ______ 0.2 1 0.5 Practically zero 0.2 1 0.5 Practically zero ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is ________ Not easily maintainable Very costly Essentially a constant speed motor A variable speed motor Not easily maintainable Very costly Essentially a constant speed motor A variable speed motor ANSWER DOWNLOAD EXAMIANS APP
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