Heating and Welding - Interview Questions | Exam2Win

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6. Heat is transferred simultaneously by condition, convection and radiation

A. inside boiler furnaces

B. during melting of ice

C. through the surface of the insulted pipe carrying steam

D. from refrigerator coils to freezer of a refrigerator

Explanation:

7. The temperature inside a furnace is usually measured by which of the following ?

A. Optical pyrometer

B. Mercury thermometer

C. Alcohol thermometer

D. Any of the above

Explanation:

8. Which of the following heating methods has maximum power factor ?

A. Arc heating

B. Dielectric heating

C. Induction heating

D. Resistance heating

Explanation:

9. In a resistance furnace the atmosphere is

A. oxidising

B. deoxidising

C. reducing

D. neutral

Explanation:

10. In an electric room heat convector the method of heating used is

A. arc heating

B. resistance heating

C. induction heating

D. dielectric heating

Explanation:

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