Electrical Engineering : Heating And Welding QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.Radiations from a black body are proportional to |
| T1 |
| T2 |
| T3 |
| T* |
17.Resistance variation method of temperature control is done by connecting resistance elements in |
| series |
| parallel |
| series-parallel connections |
| star-delta connections |
18.Due to which of the following reasons it is desirable to have short arc length ? |
| To achieve better heating |
| To increase the life of roof refractory |
| To have better stirring action |
| To reduce problem of oxidation |
19.Induction heating takes place iitwhich of the following ? |
| Insulating materials |
| Conducting materials which are magnetic |
| Conducting materials which are non-magnetic |
| Conducting materials which may or may not be magnetic |
20.For intermittent work which of the following furnaces is suitable ? |
| Indirect arc furnace |
| Core less furnace |
| Either of the above |
| None of the above |
More Heating And Welding QUESTIONS AND ANSWERS available in next pages
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