1. Establish the following relations : (i) 1kWh=36×105 Joules (ii) 1kWh=860kcal (iii) 1 B.Th.U. = 1053 Joules (iv) 1 C.H.U. = 1896 Joules 2. Compare the chief sources of energy used for the generation of electrical energy. 3. What do you mean by efficiency of a system ?

1. Establish the following relations : (i) 1kWh=36×105 Joules (ii) 1kWh=860kcal (iii) 1 B.Th.U. = 1053 Joules (iv) 1 C.H.U. = 1896 Joules 2. Compare the chief sources of energy used for the generation of electrical energy. 3. What do you mean by efficiency of a system ?

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter27: Service-entrance Equipment

Section: Chapter Questions

Problem 32R

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

100%

1. Establish the following relations :
(i) 1kWh=36×105 Joules (ii) 1kWh=860kcal
(iii) 1 B.Th.U. = 1053 Joules (iv) 1 C.H.U. = 1896 Joules

2. Compare the chief sources of energy used for the generation of electrical energy.

3. What do you mean by efficiency of a system ?

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