Electrical Machines Skewing of cage rotors offers the following advantages all of below. uniform torque. less noise. locking tendency is reduced. all of below. uniform torque. less noise. locking tendency is reduced. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cross magnetization effects which of the following? both 2 and 3 commutation reduction in main field flux reduces the terminal voltage both 2 and 3 commutation reduction in main field flux reduces the terminal voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron losses in a DC machine are independent of variation in speed. load. voltage. speed and voltage. speed. load. voltage. speed and voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers both A and B mechanical protection to the machine produce working flux flux path completion both A and B mechanical protection to the machine produce working flux flux path completion ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The counter (or back) emf in a dc machine is 1. the same as generated emf in a dc motor 2. proportional to field flux and armature speed 3. not the same as generated emf in a dc motor 4.inversely proportional to field flux 5. proportional to number of armature conductors 6. constant from no load to full load From these, the correct answer is 1, 2, 5 2, 3, 6 2, 4, 5, 6 3, 4, 5 1, 2, 5 2, 3, 6 2, 4, 5, 6 3, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Starting torque. Full load current. Operating speed. Starting torque, operating speed, full load current. Starting torque. Full load current. Operating speed. Starting torque, operating speed, full load current. ANSWER DOWNLOAD EXAMIANS APP
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