The critical resistance of the D.C. generator is the resistance of? Mark as favorite Copy Link field brushes armature load Check Answer
The number of brushes in a commutator depends on? Mark as favorite Copy Link speed of armature type of winding voltage amount of current to be collected Check Answer
Following DC generator will be in a position to build up without any residual magnetism in the poles? Mark as favorite Copy Link series generator shunt generator compound generator self-excited generator Check Answer
If a D.C. generator fails to build up the probable cause could not be? Mark as favorite Copy Link imperfect brush contact field resistance less than the critical resistance no residual magnetism in the generator faulty shunt connections tending to reduce the residual magnetism Check Answer
Number of tappings for each equilizer ring is equal to? Mark as favorite Copy Link number of pole pairs number of poles number of parallel paths number of commutator segments Check Answer
A D.C. welding generator has? Mark as favorite Copy Link lap winding wave moving duplex winding any of the above Check Answer
In D.C. generators, lap winding is used for? Mark as favorite Copy Link high voltage, high current low voltage, high current high voltage, low current low voltage, low current Check Answer
Drop in speed of a D.C. generator due to increase in load can be compensated by? Mark as favorite Copy Link cooling the armature increasing the armature resistance reducing the load voltage increasing the input to the prime mover Check Answer
Which of the following generators will be preferred if they are required to be run in parallel? Mark as favorite Copy Link Shunt generators Shunt generators Compound generators None of the above Check Answer
The function of pole shoes in the case of D.C. machine is? Mark as favorite Copy Link to reduce the reluctance of the magnetic path to spread out the flux to achieve uniform flux density to support the field coil to discharge all the above functions Check Answer