MCQ or Objective Questions on Electric Machines 2

  1. Select the motor that should not be started on no load?

    Under construction.

  2. If the source voltage of a DC motor is increased, which of the following will decrease?

    Under construction.

  3. Which of the following statement is true for an AC synchronous motor?

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  4. In DC generator, full form of MNA is what?

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  5. The output voltage of a DC generator is

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  6. The material used for commutator brushes is mostly

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  7. A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction?

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  8. Magnetic field of a DC generator is produced by what?

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  9. In a DC generator the emf generated by the armature is maximum when

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  10. A simple method of increasing the voltage of a DC generator is to

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  11. What is the actual arrangement of series wound generator?

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  12. In DC generator, armature reaction refers to what?

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  13. What is the effect of armature reaction ?

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  14. A single-phase transformer has its maximum efficiency at 60 per cent of full load. At full load copper loss will be

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  15. In DC generator, brushes are always placed along

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  16. Where the shunt generators are widely used?

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  17. What is the function of inter pole in DC generator?

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  18. What type of connection is made in between the inter pole and the field winding?

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  19. In DC generator, lap winding is used in

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  20. In DC generator, which component plays the vital role to produce the direct current?

    Under construction.