Electrical Machines Which method is less recommendable for induction motor starting in the industries? Stator resistance starting. Auto transformer starting. Direct online starting. Rotor resistance starting. Stator resistance starting. Auto transformer starting. Direct online starting. Rotor resistance starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is 384 V 768 V 192 V 96 V 384 V 768 V 192 V 96 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct ball bearings → small machines neither 1 nor 2 roller bearings → large machines both A and B ball bearings → small machines neither 1 nor 2 roller bearings → large machines both A and B 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 Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to very low less than one. approx to one. greater than one. very low less than one. approx to one. greater than one. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Motors for fans and pumps are selected in the rpm range 375 to 500. 1440 to 2880. 720 to 920. 500 to 720. 375 to 500. 1440 to 2880. 720 to 920. 500 to 720. ANSWER DOWNLOAD EXAMIANS APP
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