Answered: If a 100 W machine runs for 20 hours…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

If a 100 W machine runs for 20 hours per day, then estimate the total energy consumption per month in kilowatt hours. Assume 30 days are there in a month.

Expert Solution

Step 1

Given

100 w machine runs for 20 hours per day

Assume 30 days are there in a month

Step 2

Total energy consumption per month in kilowatt hours is

$E n e r g y (E) = p o w e r \times T i m e P o w e r = 100 w T o t a l T i m e = 20 \times 30 = 600 h o u r s E = 100 \times 600 = 60000 w h E = \frac{60000}{1000} = 60 k w h$

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