Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. cant be determined. 133.22 N-m 234.76 N-m. 266.20 N-m. cant be determined. 133.22 N-m 234.76 N-m. 266.20 N-m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Applied voltage. All of these. Armature current Ia. Field flux. Applied voltage. All of these. Armature current Ia. Field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 150 V. 240 V. 230 V. 210 V 150 V. 240 V. 230 V. 210 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux is maximum in the following part of a DC motor: under trailing pole tip. pole core. under the interpole. under leading pole tip. under trailing pole tip. pole core. under the interpole. under leading pole tip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC generator, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will deteriorate with fall of terminal voltage. deteriorate with rise in terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. deteriorate with fall of terminal voltage. deteriorate with rise in terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. ANSWER DOWNLOAD EXAMIANS APP
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