6- Thermal breakdown occurs when the heat generated inside the insulating material is a) Equal to or greater than the heat dissipated b) Less than that the heat generated from the surface c) It is completely dissipated out of insulation surface d) Only under ac voltage application e) None of the above 7- The intrinsic breakdown strength of solid dielectrics is about a) 5 to 10 MV/cm b) 500 to 1000 kV/cm c) 50 to 100 kV/mm d) 5 to 10 kV/mm e) 1 to 5 kV/mm

6- Thermal breakdown occurs when the heat generated inside the insulating material is a) Equal to or greater than the heat dissipated b) Less than that the heat generated from the surface c) It is completely dissipated out of insulation surface d) Only under ac voltage application e) None of the above 7- The intrinsic breakdown strength of solid dielectrics is about a) 5 to 10 MV/cm b) 500 to 1000 kV/cm c) 50 to 100 kV/mm d) 5 to 10 kV/mm e) 1 to 5 kV/mm

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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