Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 30° 10° 60° 45° 30° 10° 60° 45° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively? 50, 1500. 1440, 1500. 60, 1440. 60, 1500. 50, 1500. 1440, 1500. 60, 1440. 60, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is easy to cast owing to its low melting point and is easily available. cheaper in cost. of low resistivity. lighter in weight. easy to cast owing to its low melting point and is easily available. cheaper in cost. of low resistivity. lighter in weight. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because commutator action is not possible otherwise dc machines are comparatively low rating machines. it gives more uniform air-gap flux distribution it reduces field structure iron losses commutator action is not possible otherwise dc machines are comparatively low rating machines. it gives more uniform air-gap flux distribution it reduces field structure iron losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will improve but terminal voltage will fall. worsen and terminal voltage will fall worsen and terminal voltage will rise. improve and terminal voltage will rise . improve but terminal voltage will fall. worsen and terminal voltage will fall worsen and terminal voltage will rise. improve and terminal voltage will rise . ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase slip-ring induction motor, brushes are connected to DC supply. external star-connected resistors. 3 - Φ AC supply. equalizing coils. DC supply. external star-connected resistors. 3 - Φ AC supply. equalizing coils. ANSWER DOWNLOAD EXAMIANS APP
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