Electrical Machines In a DC machine current and emf in armature are unidirectional current and emf at the terminals are alternating. emf in armature conductors and at the terminals is alternating. current and emf in armature are alternating. current and emf in armature are unidirectional current and emf at the terminals are alternating. emf in armature conductors and at the terminals is alternating. current and emf in armature are alternating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to increase starting torque. reduce chance of crawling. reduce magnetizing current. reduce chance of cogging. increase starting torque. reduce chance of crawling. reduce magnetizing current. reduce chance of cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shapers and slotters which motor are preferred? Double cage motor. Slip ring IM. Squirrel cage IM. Synchronous motor. Double cage motor. Slip ring IM. Squirrel cage IM. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short circuit test on a transformer gives copper loss at half load. copper loss at any load. copper loss at over load. copper loss at full load. copper loss at half load. copper loss at any load. copper loss at over load. copper loss at full load. 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. 280 V. 220 V. 150 V. 240 V. 280 V. 220 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor uses 4-point starter? DC compound motor. DC series motor. DC shunt motor with field weaking control. DC shunt motor with armature resistance. DC compound motor. DC series motor. DC shunt motor with field weaking control. DC shunt motor with armature resistance. ANSWER DOWNLOAD EXAMIANS APP
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