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How many insulation classes are present with respect to physical states and thermal stability (maximum permissible temperature rise) used in electrical equipment?
& 5 respectively
& 3 respectively
& 7 respectively
& 7 respectively
& 7 respectively
Quick Summary: Practice and solve "How many insulation classes are present with respect to physical states and thermal stability (maxim..." for Electrical - Electrical Materials. The correct answer is Option C: & 7 respectively. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Answer:
Option **(d) **