Electrical Machines
The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is

 2, 4
 2, 3
 1, 3
 1, 4

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then

 the machine with more drooping characteristic will supply more load.
None of these
  the machine will share load equally.
  the machine with more drooping characteristic will supply less load.

ANSWER DOWNLOAD EXAMIANS APP