[Set 2]MCQ’s on Electrical Heating|Electrical Heating MCQ Questions and Answers|KSEB Sub Engineer

Contents

Electrical Heating MCQ Questions and Answers

[Set 1]MCQ’s on Electrical Heating|Electrical Heating MCQ Questions and Answers|KSEB Sub Engineer
[Set 2]MCQ’s on Electrical Heating|Electrical Heating MCQ Questions and Answers|KSEB Sub Engineer
[Set 3]MCQ’s on Electrical Heating|Electrical Heating MCQ Questions and Answers|KSEB Sub Engineer

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Question

In industries, ——– is required for the melting of metals, moulding of glass, enameling of copper, baking of insulators and welding etc.

1. electroplating

2. illumination

3. Electric Heating

4. All of the above

Answer

Option 3: electric heating

Explanation

Heating:

Heating is required for both industrial and domestic purposes.

In industries, heating is required for the melting of metals, molding of glass, enameling of copper, baking of insulators and welding etc.

In domestic purposes heating is required for cooking, water heating, room heating in winter, pressing clothes and many more.

All those purposes of heating can be fulfilled by electricity.

Electrical heating

⚫ Electrical current is passed through a resistive element whe heat is produced due to ohmic loss.

⚫ This heat is then transferred to the substance which to be heated.

⚫ In industries, electric heating is required for the melting of metals, moulding of glass, enamelling of copper, baking of insulator and welding etc.

Advantages of electrical heating

⚫ Electric heating is free from dirt hence minimum effort for cleaning is required.

⚫Electric heating is free from flue gases hence no need of exhaust system for heat generation.

⚫ Temperature control can be done very easily.

⚫ An electric heating system is economical compared to other conventional heating systems available in the industry.

⚫ Both the installation cost and running costs are quite low.

⚫Automatic protection against abnormality in the heating system can easily be provided in electrical heating.

⚫ The efficiency of the system is quite high compared to other equivalent heating systems.

⚫electric heating systems is noise free.

⚫ Starting of the system is quite faster than other systems.

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