For radiant heating around 2250°C, the heating elements are made of____________?
Correct answer: C. tungsten alloy
- A. copper alloy
- B. carbon
- C. tungsten alloy
- D. stainless steel alloy
Explanation
Tungsten-alloy elements can withstand temperatures around 2250°C because tungsten has a very high melting point and retains strength at elevated temperatures. Copper and stainless-steel alloys soften or melt at much lower temperatures.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Machines questions
Radiant heating is used for which of the following ?
Which of the following is an advantage of eddy current heating ?
Direct arc furnaces have which of the following power factors ?
The electrode of a direct arc furnace is made of____________?
In direct arc furnace, which of the following has high value ?
Due to which of the following reasons it is desirable to have short arc length ?