Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 50Hz. 150Hz. 200Hz. 100Hz. 50Hz. 150Hz. 200Hz. 100Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During no load test, an induction motor draws power for core loss and copper loss. for core loss and windage and friction loss. only for the small copper loss. for copper loss and windage friction loss. for core loss and copper loss. for core loss and windage and friction loss. only for the small copper loss. for copper loss and windage friction loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 240 V. 150 V. 220 V. 280 V. 240 V. 150 V. 220 V. 280 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip rings of an induction motors are made of phosphor bronze. stainless steel. carbon. aluminium. phosphor bronze. stainless steel. carbon. aluminium. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under trailing pole tips in case of generator will either increase or decrease decrease increase None of these either increase or decrease decrease increase None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? None of the options. Electromagnets. Both B and C. Permanent magnets. None of the options. Electromagnets. Both B and C. Permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
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