Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to high speed. magnetic inertia. residual flux. high field resistance. high speed. magnetic inertia. residual flux. high field resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in traction All of these computer printers food processing traction All of these computer printers food processing ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following transformer insulating oil generally used in India? Paraffin based insulating oil. Aromatics based insulating oil. Olefin based insulating oil. Naphtha based insulating oil. Paraffin based insulating oil. Aromatics based insulating oil. Olefin based insulating oil. Naphtha based insulating oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/3, 1/3 1/√3, 1/√3 1/√3, 1/3 1/3, 1/√3 1/3, 1/3 1/√3, 1/√3 1/√3, 1/3 1/3, 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will coincide with the GNA shift forward by more than 90° shift forward by 90° shift forward by less than 90° coincide with the GNA shift forward by more than 90° shift forward by 90° shift forward by less than 90° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature voltage control is considered suitable for a DC motor driven at constant torque. current. power. speed. torque. current. power. speed. ANSWER DOWNLOAD EXAMIANS APP
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