Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Winding conductors of an electrical power transformer are mainly insulated by
Cotton Insulation
Rubber Insulation
Paper Insulation
Wooden Insulation
Paper Insulation
The correct answer is C) Paper Insulation because winding conductors in electrical power transformers typically require high dielectric strength and thermal stability, which paper insulation provides. Paper insulation is preferred for its effectiveness in reducing dielectric losses and its ability to withstand high temperatures.
The correct answer is C) Paper Insulation because winding conductors in electrical power transformers typically require high dielectric strength and thermal stability, which paper insulation provides. Paper insulation is preferred for its effectiveness in reducing dielectric losses and its ability to withstand high temperatures.
The mechanism behind paper insulation lies in its chemical composition and structure. Paper, treated with oils or resins, acts as a dielectric material that effectively insulates the winding conductors, preventing electrical breakdown. This insulation helps maintain the transformer's performance by ensuring reliable operation under varying electrical loads and temperature conditions.
Paper insulation has a high dielectric strength.
It provides excellent thermal stability and minimizes dielectric losses.
High dielectric strength prevents electrical breakdown.
Good thermal conductivity helps with heat dissipation.
Paper insulation can absorb moisture, reducing its effectiveness.
It may degrade over time if exposed to extreme conditions.
Used in high-voltage power transformers.
Common in various electrical machine windings.
Standard insulation thickness can vary based on transformer ratings.
Option A (Cotton Insulation) is less effective in high-voltage applications; Option B (Rubber Insulation) is more flexible but lacks the required dielectric strength; Option D (Wooden Insulation) is impractical for electrical applications.
C is correct тАФ Paper insulation is the preferred insulation method for winding conductors in electrical power transformers due to its high dielectric strength and thermal stability.
Understanding dielectric materials is crucial for applications in both transformers and other electrical equipment. Focus on material properties when preparing for such topics.