Question

Q10. Medium temperature resistance furnaces having operating temperatures between :
O (A) 1050-1350 deg. centigrade
(B) 300-1050 deg. centigrade
(C) 80-300 deg. centigrade
(D) 1350-2500 deg. centigrade​

Answer 1

Medium temperature resistance furnaces have operating temperatures between 300°C and 1050°C

Explanation:

Temperature resistance furnaces are classified as low, medium and high based on their operating temperatures.

• Low temperature resistance furnaces consist of heating chamber with ventilation. Example: Oven. They are used for baking, pottery, vulcanizing, etc.
• Medium temperature resistance furnaces have operating temperatures between 300°C and 1050°C. They are used for annealing, standardization of steel and non-ferrous metals, melting of non-ferrous metals, and enameling of stoves.
• High temperature resistance furnaces have operating temperatures between  1050°C and 1350°C. They are used for hardening applications.

Option B is the answer.