Practice Calculation of Operating and Maintenance Costs - 3.3 | 21. Introduction to Defender and Challenger Equipment | Construction Engineering & Management - Vol 1
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

3.3 - Calculation of Operating and Maintenance Costs

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is considered an operating cost?

💡 Hint: Think about daily running costs.

Question 2

Easy

What does salvage value represent?

💡 Hint: It's like the final price when selling something used.

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 annual operating cost of the challenger?

  • 90,000
  • 135,000
  • 100,000

💡 Hint: Look back to the initial costs mentioned.

Question 2

Is the defender's initial cost relevant in the replacement analysis?

  • True
  • False

💡 Hint: Consider which costs are current versus past.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A piece of machinery has a purchase price of 50,000 with an annual operating cost of 10,000 and salvage value of 5,000 after 4 years. If the interest rate is 6%, compute the EAC.

💡 Hint: Use formulas for Pv and annualize them.

Question 2

Scenario: Two machines have the following details: Machine A costs 25,000, with operating costs of 3,000, salvage at 2,000 over 5 years; Machine B costs 20,000, with 2,500 operating and 1,500 salvage value. Which machine is preferable and why, based on EAC?

💡 Hint: Focus on annualizing those costs.

Challenge and get performance evaluation