Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds?
Correct answer: D. 150°C
- A. 50°C
- B. 80°C
- C. 100°C
- D. 150°C
Explanation
Transformer oil generally begins significant thermal dissociation and gas formation only at temperatures above about 150°C. Normal operating temperatures below this level do not usually liberate gas by oil decomposition.
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
The main reason for generation of harmonics in a transformer could be_______________?
The value of flux involved m the e.m.f. equation of a transformer is____________?
Distribution transformers are generally designed for maximum efficiency around________________?
The full-load copper loss of a trans¬former is 1600 W. At half-load, the copper loss will be___________?
A Buchholz relay can be installed on______________?
A transformer oil must be free from________________?