Objective Questions on DC Generators Performance Curves

  1. A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be

    Under construction.

  2. Short circuiting is caused in the armature winding due to

    Under construction.

  3. With the increases in field excitation of a DC generator, its generated emf

    Under construction.

  4. The compensating winding in a DC machine

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  5. The slight curvature at the lower end of the OCC of a self excited DC generator is due to

    Under construction.

  6. A generator may loose residual magnetism due to

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  7. In Dc generators, the residual magnetism is of the order of

    Under construction.

  8. In large sized DC machines the compensating windings are provided to

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  9. In Dc machines, the interpoles are provided

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  10. The fall in speed of the DC generator due to increase in load can be corrected by

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  11. The factors that are responsible for decrease in terminal voltage of a shunt generator are

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  12. Which of following DC generator will be in a position to build up without any residual magnetism in the field ?

    Under construction.

  13. Flashing of DC generator means

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  14. Which of the following DC generators has rising V-I characteristics ?

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  15. For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is

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  16. The voltage regulation of a DC generator at full load being zero implies that the generator is

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  17. The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type :

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  18. The ___________________ generator has the poorest voltage regulation.

    Under construction.

  19. Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then

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  20. The magnetic field which initially induces emf in the armature in a self excited DC generator is because of

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