Electrical Machines
A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is

 40 V
 zero
 20 V
 50 V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If two 8-pole dc machines of identical armature sare wound, one with lap winding and the other with wave winding, then

 lap-wound machine will have more rated voltage and less current
 lap-wound machine will have more rated voltage and more current
 wave-wound machine will have more rated voltage and less current
 wave-wound machine will have more rated current and more voltage

ANSWER DOWNLOAD EXAMIANS APP