Electrical Machines In DC machine yoke offers mechanical protection to the machine produce working flux both A and B flux path completion mechanical protection to the machine produce working flux both A and B flux path completion ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor slots are slightly skewed in squirrel cage induction motor to decrease the amount of copper to be used. provide ease of fabrication. reduce the magnetic hum and locking tendency of rotor. increase the strength of rotor bars. decrease the amount of copper to be used. provide ease of fabrication. reduce the magnetic hum and locking tendency of rotor. increase the strength of rotor bars. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Speed regulation. Starting torque. Running Torque. Effiency. Speed regulation. Starting torque. Running Torque. Effiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following factors improve commutation in a dc machine ? 1. High contact resistance of brushes 2. High inductance of the coils undergoing commutation 3. Shifting of brushes in the direction of rotation for a generator and in the opposite direction For a motor 4. Narrow width for the commutation bars Select the correct answer using the codes given below : Codes : 1, 2 and 4 2, 3 and 4 1 and 3 1, 2, and 3 1, 2 and 4 2, 3 and 4 1 and 3 1, 2, and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Oil impregnated paper. Vacuum. Glass. Mica. Oil impregnated paper. Vacuum. Glass. Mica. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are mechanically linked. inductively linked. electrically linked. conductively linked. mechanically linked. inductively linked. electrically linked. conductively linked. ANSWER DOWNLOAD EXAMIANS APP
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