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Chapter 5 ELECTRIC HEATING MCQs

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1. . Electric heating is better than other sources of heating because of:





2. . Which mode of heat transfer is clear example of sun:





3. . In this method, current passes through high resistive element and heat is produced due to (IĀ²R) power losses:





4. . Heating pump is a machine that can pump heat from:





5. . In this method, the material to be heated is taken as a resistance and current passes through it:





6. . This furnace is used for production and refining of various grades of steel:





7. . Indirect Arc furnace transfers heat to the charge by:





8. . In induction heating, amount of heat can be controlled by:





9. . It is suitable heating method for non-conducting materials:





10. . Infrared heating is used for:





11. . For spot welding, voltage between electrode should be less than:





12. . This type of welding is frequently used in the automobile and aircraft industries:





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