1. The field current and the direction of rotation of the polarity of the DC generator cannot be changed by changing both.
2. The DC motor is running at normal speed and the field winding will open suddenly when the motor will not run.
3. The DC series motor should never start without a mechanical load, because at no load it produces infinite speed.
4. If 220 volt DC the shunt field resistance in the machine is 440 ohms, the shunt field current will be 0.5 amperes.
5. In addition to increasing the number of coils, the number of split rigs also needs to increase.
6. The shunt field winding connects to the battery briefly to regain the residual magnetization of the DC shunt generator.
7. Interpoles are usually wound with heavy gauges, super-enameled copper wire.
8. A dc Generator having both Interpol and compensating winding. Both wiring is in the series of armature circuit.
9. To change the direction of rotation without changing the properties of the DC compound motor, only the armature connections have to be interchanged.
10. A two point starter can be called a starter with slow resistance and no overload trip measure.
11. If the a self-excited D.C. generator fails to create voltage, then it can start to create voltage by changing its field connections.
12. To obtain the sine wave size of alternating current (AC), the coil must move in the same value field.
13. Shunt field coils carry less current due to higher resistance but due to the higher number of turns in it, a much larger magnetic field is formed.
14. In differential compound generators, the terminal voltage on the load is fall very fast.
15. DC. Compound motors use shorter turn and more cross section area wires in series field windings than shunt field winding.
16. The polarity of the Interpoles in the DC generator should be the same as the next main pole according to the direction of rotation.
17. If both the speed and torque of the motor increase simultaneously at the load, it will result in overloading.
18. The armature shaft is placed in the proper place by placing end plates on both sides.
19. If the field circuit resistance in the DC generator is greater than the field critical resistance then the generator will not generate voltage.
20. The terminals with continuum brushes are armature terminals.
21. The function of the interpoles is to reduce sparking on the commutator.
22. According to the working conditions, the duration of insulation testing of DC machines should be one month.
23. The direction of rotation of the motor is determined by Fleming's left-hand rule.
24. Shunt generators are used to charge batteries by a constant voltage method.
25. If the armature current of the DC motor is reduced by 50 percent, then the torque in the motor will remain 25 percent of the previous value.
26. The electrical carrying force (EMF) generated by the dynamic method is primarily of alternating current nature.
27. Before measuring the resistance of the armature of the DC machines, it should be checked that the brush is in its correct position.
28. Increase the speed of prime mover by increasing The voltage of any DC generator can be easily increased.
29. DC. Armature Reaction Effect in the generator is cross magnetization in the pole.
30. The speed of the DC shunt motor is controlled from the field. The most suitable 4 point starter in this situation.
18. The armature shaft is placed in the proper place by placing end plates on both sides.
19. If the field circuit resistance in the DC generator is greater than the field critical resistance then the generator will not generate voltage.
20. The terminals with continuum brushes are armature terminals.
21. The function of the interpoles is to reduce sparking on the commutator.
22. According to the working conditions, the duration of insulation testing of DC machines should be one month.
23. The direction of rotation of the motor is determined by Fleming's left-hand rule.
24. Shunt generators are used to charge batteries by a constant voltage method.
25. If the armature current of the DC motor is reduced by 50 percent, then the torque in the motor will remain 25 percent of the previous value.
26. The electrical carrying force (EMF) generated by the dynamic method is primarily of alternating current nature.
27. Before measuring the resistance of the armature of the DC machines, it should be checked that the brush is in its correct position.
28. Increase the speed of prime mover by increasing The voltage of any DC generator can be easily increased.
29. DC. Armature Reaction Effect in the generator is cross magnetization in the pole.
30. The speed of the DC shunt motor is controlled from the field. The most suitable 4 point starter in this situation.