Electrical Machines When operating, two or more transformers in parallel, % impedance of these transformers should be such that actual impedance of all transformers would be same. same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. such that actual impedance of all transformers would be same. same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 60 Hz 40 HZ 50 Hz 25 Hz 60 Hz 40 HZ 50 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which is the arrangement of windings in a core type single phase transformer? Sandwiched lv and hv discs on each core limb Half hv inside and half lv outside on each core limb Lv on one core limb and hv on the other Half lv inside and half hv outside on each core limb Sandwiched lv and hv discs on each core limb Half hv inside and half lv outside on each core limb Lv on one core limb and hv on the other Half lv inside and half hv outside on each core limb ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should smoothly run in the holders. smooth, concentric commutator properly undercut. brushes should be of proper grade and size. All of these brushes should smoothly run in the holders. smooth, concentric commutator properly undercut. brushes should be of proper grade and size. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to greater than one. less than one. approx to one. very low greater than one. less than one. approx to one. very low ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are nullify reactance voltage and improve the commutation. both 1 and 2 reduce cross magnetization effect and improve commutation None of these nullify reactance voltage and improve the commutation. both 1 and 2 reduce cross magnetization effect and improve commutation None of these ANSWER DOWNLOAD EXAMIANS APP
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