Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value? 0.04 0.02 0.4 0.2 0.04 0.02 0.4 0.2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series generators are used in which of the following applications? Used as boosters in dc distribution or transmission. Arc welding. All of these Air crafts. Used as boosters in dc distribution or transmission. Arc welding. All of these Air crafts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging in induction motor occurs when number of stator teeth - number of rotor teeth = even number. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = 0. number of stator teeth - number of rotor teeth = even number. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = 0. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of the rotor bars of dc motors are laminated to reduce hysteresis loss. to provide better flux linkage. to reduce mechanical losses. to reduce eddy current loss. to reduce hysteresis loss. to provide better flux linkage. to reduce mechanical losses. to reduce eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to any of the above. under commutation. over commutation. too rapid reversal of current. any of the above. under commutation. over commutation. too rapid reversal of current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to absorb moisture of air during breathing. absorb moisture from air entering in transformer. provide cold air in transformer. filter the transformer oil. absorb moisture of air during breathing. absorb moisture from air entering in transformer. provide cold air in transformer. filter the transformer oil. ANSWER DOWNLOAD EXAMIANS APP
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