Electrical Engineering : Heating And Welding QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Hysteresis loss and eddy current loss are used in |
| induction heating of steel |
| dielectric heating |
| induction heating of brass |
| resistance heating |
7.In the indirect resistance heating method, maximum heat-transfer takes place by |
| radiation |
| convection |
| conduction |
| any of the above |
8.In arc furnace the function of choke is |
| to stabilize the arc |
| to imprpve, power factor |
| to reduce severity of the surge |
| none of the above |
9.It is desirable to operate the arc furnaces at power factor of |
| zero |
| 0.707 lagging |
| unity |
| 0.707 leading |
10.In direct arc furnace, which of the following has high value ? |
| Current |
| Voltage |
| Power factor |
| All of the above |
More Heating And Welding QUESTIONS AND ANSWERS available in next pages
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