The incorrect statement regarding generators is Back pitch and front pitch are both odd and approximately equal to the pole pitch Compensating winding in a machine helps in commutation Equalizing bus bars are used with parallel running of shunt generators In a D. C. generator interpoles winding is connected in series with the armature winding … Read more
In generators, current to the external circuit from armature is given through Commutator Slip rings Solid connection None of above Correct answer: 1. Commutator Visit Electrical Engineering MCQ here for more
A series generator can self-excite Irrespective of the value of load current Only if the load current is not zero Only if the load current is zero None of these Correct answer: 2. Only if the load current is not zero Visit Electrical Engineering MCQ here for more
Generators are connected to the bus-bars or disconnected from them only under the floating condition in order To avoid burning of switch contacts To avoid mechanical jerk to the shaft To avoid sudden loading of the prime mover All of above Correct answer: 4. All of above Visit Electrical Engineering MCQ here for more
In case of a separately excited generator supplying rated load, the armature reaction Is always absent Is always present May be sometimes present None of these Correct answer: 2. Is always present Visit Electrical Engineering MCQ here for more
The generator that will have negligible terminal voltage while running on no-load Compound generator Separately excited generator Series generator Shunt generator Correct answer: 3. Series generator Visit Electrical Engineering MCQ here for more
In a DC generator the critical resistance can be increased by Decreasing its field resistance Decreasing its speed Increasing its field resistance Increasing its speed Correct answer: 4. Increasing its speed Visit Electrical Engineering MCQ here for more
If an electrical generator fails to build up the probable cause could not be Faulty shunt connections tending to reduce the residual magnetism Field resistance less than the critical resistance Imperfect brush contact No residual magnetism in the generator Correct answer: 2. Field resistance less than the critical resistance Visit Electrical Engineering MCQ here for … Read more
Lap winding comprises of 1 Odd number of conductors Any of above None of above Correct answer: 1. Even number of conductors Visit Electrical Engineering MCQ here for more
The generating machine that will offer constant voltage on all loads Level compounded generator Self-excited generator Separately excited generator All of these Correct answer: 1. Level compounded generator Visit Electrical Engineering MCQ here for more