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  1. The weight of copper of both armature and field windings decreases with _____ in number of poles.

  2. A.

     increase

    B.

     decrease

    C.

     either of the above

    D.

     none of the above

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  3. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?

  4. A.

     Absolute instruments

    B.

     Indicating instruments

    C.

     Recording instruments

    D.

     Integrating instruments

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  5. In Weston synchronoscope the moving coil is connected across

  6. A.

     bus-bars

    B.

     incoming alternator

    C.

     fixed coils

    D.

     any of the above

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  7. The winding where dummy coils are used is sometimes called

  8. A.

     Duplex winding

    B.

     Triplex winding

    C.

     Forced winding

    D.

     None of the above

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  9. By which of the following methods the temperature rise of windings and other parts may be determined ?

  10. A.

     Thermometer method

    B.

     Resistance method

    C.

     Embedded temperature detector method

    D.

     Any of the above

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  11. In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at

  12. A.

     0°

    B.

     60°

    C.

     90°

    D.

     120°

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  13. With conventional hydrogen cooling it is possible to increase the rating of a single unit to

  14. A.

     50 MW

    B.

     100 MW

    C.

     200 MW

    D.

     none of the above

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  15. Which of the following is the commonly used type of electromagnets ?

  16. A.

     Flat-faced armature type

    B.

     Horse shoe type

    C.

     Flat-faced plunger type

    D.

     All of the above

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  17. The noise produced by a ______ cooled machine is less as the rotor moves in a medium of smaller density.

  18. A.

     air

    B.

     hydrogen

    C.

     either (A) or (B)

    D.

     none of the above

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  19. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is

  20. A.

     10°

    B.

     80°

    C.

     120°

    D.

     170°

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