Practice Calculating Required Power Using Performance Charts - 2.2 | 1. Effect of Altitude on Engine Performance | Construction Engineering & Management - Vol 2
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Knowledge

2.2 - Calculating Required Power Using Performance Charts

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to air density as altitude increases?

💡 Hint: Think about the atmosphere and how it changes with height.

Question 2

Easy

What is a turbocharger?

💡 Hint: Consider what happens to air as it gets compressed.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

How does altitude affect internal combustion engine performance?

  • It increases the horsepower output
  • It has no effect at all
  • It decreases the horsepower output
  • It only affects the fuel quality

💡 Hint: Think about what happens to air density at higher altitudes.

Question 2

True or False: A turbocharger is unnecessary for engines operating at sea level.

  • True
  • False

💡 Hint: Consider why we might need such devices.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A bulldozer is working at 2000 meters elevation with a gross weight of 9000 kg. If the estimated grade resistance is 10% and the rolling resistance is 5%, calculate the total resistance and show how to derive the required power from the performance chart.

💡 Hint: Use the chart to find where the lines intersect based on your total resistance.

Question 2

A certain machine's performance at sea level shows a rimpull of 1000 kg, while at 3000 m altitude, it drops to 700 kg. If the vehicle's resistance is calculated at 12%, how can you adjust your calculations for efficiency loss?

💡 Hint: Reflect on the decrease in power output and connect it to altitude effects.

Challenge and get performance evaluation