Important Electric Heating Multiple Choice Questions and Answers

16.  Hysteresis loss and eddy current loss are used in

   A. Induction heating of steel

   B. Dielectric heating

   C. Induction heating of brass

   D. Resistance heating

17.  Ajax Wyatt furnace he's started when

   A. It is filled below core level

   B. It is filled above core level

   C. It is fully empty

   D. None of the above

18.  In direct arc furnace which of the following has highest value?

   A. Current

   B. Voltage

   C. Power factor

   D. All of the above

19.  Direct arc furnaces have which of the following power factors?

   A. Unity

   B. Low, lagging

   C. Low, leading

   D. Any of the above

20. .......... Is used for heating non-conducting materials

   A. Eddy current heating

   B. Arc heating

   C. Induction heating

   D. Dielectric heating

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