Practice Battery Backup Time Calculation - 5.3 | Module 7: Electrical Installations, Safety, and Energy Management | Basics of Electrical Engineering
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5.3 - Battery Backup Time Calculation

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the term 'Battery Bank Capacity' refer to?

💡 Hint: Think about how batteries store energy.

Question 2

Easy

Define Depth of Discharge (DoD).

💡 Hint: How is it used to preserve battery life?

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 formula to calculate backup time for an AC load?

  • Backup Time = (Capacity * Voltage * Efficiency * DoD) / Load Power
  • Backup Time = (Load Power) / (Capacity * Voltage * Efficiency)
  • Backup Time = (Voltage * Capacity * Load Power) / Efficiency

💡 Hint: Focus on identifying what each variable represents.

Question 2

True or False: Depth of Discharge allows for maximizing battery lifespan.

  • True
  • False

💡 Hint: Think about the effects of completely draining a battery.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A community center relies on a 24V battery bank (100Ah) to power its lighting (loads of 300W). Calculate the backup time considering a 70% system efficiency.

💡 Hint: Calculate the usable energy first, then find how long it can power the lighting.

Question 2

If a battery can supply 600W for a load but has a total capacity of 200Ah at 12V. What is the maximum time this battery can last with a 50% DoD?

💡 Hint: Account for DoD in your calculations.

Challenge and get performance evaluation