Practice Estimating Power Requirements with a Problem Example - 3.5 | Overview 72 | Construction Engineering & Management - Vol 1
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3.5 - Estimating Power Requirements with a Problem Example

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Convert 25,000 kg into tons.

💡 Hint: Remember, divide by 1000.

Question 2

Easy

What is rolling resistance for a vehicle weighing 30 tons with a rolling resistance of 50 kg per ton?

💡 Hint: Multiply weight in tons by the rolling resistance.

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

What is the rolling resistance for a vehicle weighing 100 tons and rolling resistance of 25 kg per ton?

  • 2500 kg
  • 2000 kg
  • 3000 kg

💡 Hint: Multiply the weight in tons by the rate.

Question 2

True or False: The only factor impacting usable power is the weight of the vehicle.

  • True
  • False

💡 Hint: Consider other aspects like grade and rolling resistance.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A construction vehicle weighing 20 tons operates on a road with a rolling resistance of 50 kg per ton and a 4% slope. Calculate the total tractive effort needed and the usable power if its max rimpull is 8000 kg.

💡 Hint: Find total resistance first, then subtract from max rimpull.

Question 2

If a machine has a rolling resistance of 15 kg per ton and weighs 10 tons on a 3% incline, how much additional power is needed to tow 2000 kg uphill?

💡 Hint: Calculate both resistances to find your total effective pull.

Challenge and get performance evaluation