Electrical Machines A DC series motor must started on no load because it would Fail to start without load. Draw more current without producing sufficient torque. Run at dangerously high speed. Not develop starting torque. Fail to start without load. Draw more current without producing sufficient torque. Run at dangerously high speed. Not develop starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-winding single-phase motor has starting torque equal to full-load torque. zero starting torque. high starting torque. low starting torque. starting torque equal to full-load torque. zero starting torque. high starting torque. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 175 V 140 V 240 V 120 V 175 V 140 V 240 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Starting torque, operating speed, full load current. Full load current. Operating speed. Starting torque. Starting torque, operating speed, full load current. Full load current. Operating speed. Starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The coil spam can never be equal to pole pitch. must be exactly equal to people pitch. none of above. may or may not be exactly equal to people pitch. can never be equal to pole pitch. must be exactly equal to people pitch. none of above. may or may not be exactly equal to people pitch. 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 it gives more uniform air-gap flux distribution dc machines are comparatively low rating machines. it reduces field structure iron losses commutator action is not possible otherwise it gives more uniform air-gap flux distribution dc machines are comparatively low rating machines. it reduces field structure iron losses commutator action is not possible otherwise ANSWER DOWNLOAD EXAMIANS APP
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