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- Heating & Welding Mcqs - Set 2
MCQs 1: Which of the following devices is necessarily required for automatic temperature control in a furnace ?
MCQs 2: Direct arc furnaces have which of the following power factors ?
MCQs 3: Which of the following is an advantage of eddy current heating ?
The amount of heat generated can be controlled accurately
Heat at very high rate can be gene-rated
The area of the surface over which heat is produced can be accurately controlled
All of the above
MCQs 4: Radiant heating is used for which of the following ?
Annealing of metals
Melting of ferrous metals
Heating of liquids in electric kettle
Drying of paints and varnishes
MCQs 5: For radiant heating around 2250°C, the heating elements are made of____________?
MCQs 6: The electrode of a direct arc furnace is made of____________?
MCQs 7: In direct arc furnace, which of the following has high value ?
MCQs 8: In a domestic cake baking oven the temperature is controlled by________________?
MCQs 9: 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
All of the above
MCQs 10: In an electric press mica is used_____________?
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