Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms. 0.512. 0.649. 0.443. 0.573. 0.512. 0.649. 0.443. 0.573. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to withstand any unbalanced magnetic pull on the armature core. bending moment due to weight of the armature. All of these twisting strains due to transmission of torque. any unbalanced magnetic pull on the armature core. bending moment due to weight of the armature. All of these twisting strains due to transmission of torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Induction motor. DC motor. Electrical power generator. Electrical power transformer. Induction motor. DC motor. Electrical power generator. Electrical power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 4 pole lap winding is used. The number of parallel paths are? 2 4 8 1 2 4 8 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using star connection. V connection. zig - zag connection. delta connection. star connection. V connection. zig - zag connection. delta connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At the instant of starting, the per unit slip of 3 - Φ induction motor is 1.0. 0.05. 0.1. 0.5. 1.0. 0.05. 0.1. 0.5. ANSWER DOWNLOAD EXAMIANS APP
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