(a) In high voltage applications the dielectric strength of insulating materials and the electric field stresses developed in them are important factors. In your own words, explain the relationship between electric field stresses and dielectric strength of insulating material.

(a) In high voltage applications the dielectric strength of insulating materials and the electric field stresses developed in them are important factors. In your own words, explain the relationship between electric field stresses and dielectric strength of insulating material.

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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Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors. The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.

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(a) In high voltage applications the dielectric strength of insulating materials and the
electric field stresses developed in them are important factors. In your own
words, explain the relationship between electric field stresses and dielectric
strength of insulating material.

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