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? 2880 rpm 1000 rpm 1440 rpm 730 rpm 2880 rpm 1000 rpm 1440 rpm 730 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a double squirrel cage induction motor, the outer cage winding has _______ Low resistance None of the listed here High resistance High inductance Low resistance None of the listed here High resistance High inductance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The air gap between stator and rotor of 3-phase induction motor ranges from ______ 0.4 mm to 4 mm 1 cm to 2 cm 2 cm to 4 cm 4 cm to 6 cm 0.4 mm to 4 mm 1 cm to 2 cm 2 cm to 4 cm 4 cm to 6 cm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The advantage of wound rotor motor is that _______ It requires less maintenance External resistance can be inserted in the rotor circuit It is inexpensive None of the listed here It requires less maintenance External resistance can be inserted in the rotor circuit It is inexpensive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors At starting of a double squirrel cage induction motor _______ Outer cage winding has good pf Lower cage winding has low reactance None of the listed here Lower winding is more effective Outer cage winding has good pf Lower cage winding has low reactance None of the listed here Lower winding is more effective 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 not run The motor will burn The motor will run in reverse direction The motor will run at reduced speed The motor will not run The motor will burn The motor will run in reverse direction ANSWER DOWNLOAD EXAMIANS APP
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