Certified Energy Manager Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Energy Manager Exam with flashcards and multiple choice questions, complete with hints and explanations. Enhance your knowledge and get exam ready with our tailored content!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the typical frequency of power systems in North America?

50 hertz
60 hertz
70 hertz
80 hertz

The correct answer is: 60 hertz

In North America, the standard frequency for electrical power systems is 60 hertz. This frequency is used in the majority of the electrical grid across the United States and Canada. The choice of 60 hertz was established in the early development of electrical systems, mainly due to the design of electrical machinery and the preferences of the engineers at the time. Operating at this frequency optimizes the performance of motors and generators, ensuring efficiency in power transmission and distribution. The adoption of 60 hertz has become a standard in the region and is widely referenced in power system design, equipment specifications, and regulatory standards. In contrast, other regions, such as many in Europe and Asia, typically use 50 hertz. Understanding this frequency is crucial for energy managers, as it affects not only the design and operation of electrical equipment but also the planning and reliability of the power system.