This set of Casting, Forming and Welding Multiple Choice Questions & Answers (MCQs) focuses on “Reverberatory Furnace”.
1. Using what is the lining of the reverberatory furnace done?
a) Acid
b) Base
c) Water
d) Salt
View Answer
Explanation: The air furnace or the reverberatory furnace, is an acid-lined reverberatory furnace. This furnace can be used for the manufacture of malleable iron and gray iron castings.
2. Which coal is used as a fuel in an air furnace?
a) Lignite
b) Bituminous
c) Anthracite
d) Peat
View Answer
Explanation: In the air furnace or the reverberatory furnace, a pulverized bituminous lump coal is used as a fuel. If not a bituminous coal, oils are used for the same purpose.
3. What is the minimum capacity of an air furnace?
a) 5 tons
b) 7 tons
c) 9 tons
d) 11 tons
View Answer
Explanation: Reverberatory furnace is used for the production of malleable iron and gray iron castings. The minimum capacity of an air furnace or a reverberatory furnace is around 5 tons.
4. What is the maximum capacity of an air furnace?
a) 35 tons
b) 70 tons
c) 19 tons
d) 50 tons
View Answer
Explanation: None.
5. In the following figure of the air furnace, what does the question mark represent?
a) Fire bridge
b) Skimming door
c) Hearth
d) Bungs
View Answer
Explanation: The given figure is that of an air furnace or a reverberatory furnace. The question mark in the picture is depicting a skimming door.
6. In the following figure of the air furnace, what does the question mark represent?
a) Bungs
b) Hearth
c) Fire bridge
d) Fire bars
View Answer
Explanation: The question mark in the picture is depicting a fire bridge. This bridge is used for holding the molten metal. The given figure is that of an air furnace or a reverberatory furnace.
7. In the following figure of the air furnace, what does the question mark represent?
a) Bungs
b) Fire place
c) Fire bars
d) Hearth
View Answer
Explanation: The question mark in the picture is depicting a hearth. The given figure is that of an air furnace or a reverberatory furnace. This hearth finds its place above the fire bridge in the apparatus.
8. In the following figure of the air furnace, what does the question mark represent?
a) Firing door
b) Firing place
c) Firing bridge
d) Firing bars
View Answer
Explanation: The given figure is that of an air furnace or a reverberatory furnace. The question mark in the picture is depicting a firing door. Air and fuel are flown through this door only.
9. In the following figure of the air furnace, what does the question mark represent?
a) Hearth
b) Sight holes
c) Bungs
d) Fire bars
View Answer
Explanation: The question mark in the picture is depicting a few bungs. These bungs insure the proper charging of the metal. The given figure is that of an air furnace or a reverberatory furnace.
10. Malleable iron can be produced using a reverberatory furnace.
a) True
b) False
View Answer
Explanation: Malleable iron and high test gray iron castings are few such examples which can be produced using the reverberatory furnace or the air furnace.
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