Lesson 6

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School

Pennsylvania State University *

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Course

101

Subject

Aerospace Engineering

Date

Apr 3, 2024

Type

pdf

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Uploaded by DoctorTeam18550

Lesson 6.2 Participation: Calculating Efficiency Due Apr 3 at 11:59pm Points 3 Questions 3 Time Limit None Allowed Attempts Unlimited Attempt History Attempt Time Score LATEST Attempt 1 3 minutes 3 out of 3 Score for this attempt: 3 out of 3 Submitted Jan 22 at 11:44am This attempt took 3 minutes.  Question 1 1 / 1 pts Correct! 30% 70% 50% 130%  Question 2 1 / 1 pts Correct! 50% 35% 75% 200%  Take the Quiz Again A power plant converts 100 kJ of coal into 30 kJ of electrical energy. What is the efficiency? Your home converts 30 kJ of electrical energy into 15 kJ of useful energy (heat, electric) and 15 kJ of wasted energy. What is your home’s efficiency?

Question 3 1 / 1 pts Correct! 15% 70% 85% 100% Quiz Score: 3 out of 3 From the power plant, it took 100 kJ of coal to produce the 15 kJ of useful energy in your home. What is the total efficiency?

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