Fig.12- A heater takes a current of 8 A from a 230 V source for 12 h. Calculate the energyconsumed in kilowatt hours.(A) 220 kw.h(B) 2.2 kw.h(C) 22 kw.h(D) 2 kw.h 5- For the air-core coil in Fig. 3: Find the inductance.I=25.4mmAir core (4)(A)15.68µH (B) 20 µH (C) 10 µH (D) 1.5 µHd=6.35mmFig.3100 turns

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Answered: 2- A heater takes a current of 8 A from…

2- A heater takes a current of 8 A from a 230 V source for 12 h. Calculate the energy consumed in kilowatt hours. (A) 220 kw.h (B) 2.2 kw.h (C) 22 kw.h (D) 2 kw.h

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

Fig.1
2- A heater takes a current of 8 A from a 230 V source for 12 h. Calculate the energy
consumed in kilowatt hours.
(A) 220 kw.h
(B) 2.2 kw.h
(C) 22 kw.h
(D) 2 kw.h

5- For the air-core coil in Fig. 3: Find the inductance.
I=25.4mm
Air core (4)
(A)15.68µH (B) 20 µH (C) 10 µH (D) 1.5 µH
d=6.35mm
Fig.3
100 turns

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