Answered: 3. A condenser vacuum gauge reads 715…

3. A condenser vacuum gauge reads 715 mm Hg when the barometer stands at 757 mm Hg. What is the absolute pressure in the condenser in kPa.

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 12RQ

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Concept explainers

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

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Activity 1
3. A condenser vacuum gauge reads
715 mm Hg when the barometer
stands at 757 mm Hg. What is the
absolute pressure in the condenser in
kPa.

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