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
Which one of the following generators is used for charging the batteries? Mark as favorite Copy Link Shunt Series Compound Any of the above Check Answer
When the shunt field of a compound generator is connected across both the series field and armature. Such a convection is known as? Mark as favorite Copy Link short shunt long shunt cumulative compounding differential compounding Check Answer
In a separately excited generator supplying rated load the armature reaction? Mark as favorite Copy Link is always present is always absent may be sometimes present none of the above Check Answer
In DC generators the polarity of the interpoles? Mark as favorite Copy Link is the same as that of the main pole ahead is the same as that of the immediately preceding pole is opposite to that of the main pole ahead is neutral as these poles do not play part in generating e.m.f. Check Answer
The series field of a short-shunt DC generator is excited by? Mark as favorite Copy Link external current armature current shunt current load current Check Answer
Armature reaction of an unsaturated D.C. machine is? Mark as favorite Copy Link cross magnetising demagnetising magnetising none of above Check Answer