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
The bearings used to support the rotor shafts are usually Ball bearings Bush bearings Magnetic bearings Needle bearings Correct answer: 1. Ball bearings Visit Electrical Engineering MCQ here for more
The generator that will be preferred if required to be run in parallel Compound generators Series generators Shunt generators None of above Correct answer: 3. Shunt generators Visit Electrical Engineering MCQ here for more
A shunt generator can self-excite if Irrespective of the value of the resistance in the field circuit Resistance of the field circuit is greater than critical value Resistance of the field circuit is less than critical value None of these Correct answer: 3. Resistance of the field circuit is less than critical value Visit Electrical … Read more
the number of brushes in case of lap winding is always Double the number of poles Half the number of poles Same as the number of poles Two Correct answer: 3. Same as the number of poles Visit Electrical Engineering MCQ here for more
The generator can be considered as a Power pump Prime mover Rectifier Rotating amplifier Correct answer: 4. Rotating amplifier Visit Electrical Engineering MCQ here for more
In case of DC machines, the mechanical losses of machines are primary function of Current Speed Voltage None of these Correct answer: 2. Speed Visit Electrical Engineering MCQ here for more