Certified Data Centre Professional (CDCP) Practice Exam

The impact of harmonics on facilities such as emergency generators in a data center is significant, as harmonics can lead to various operational issues. When harmonics are present, they can cause overheating, vibration, and operational inefficiencies in generators. As a result, it is often necessary for these generators to be oversized in advance to handle the additional stress and load created by harmonic distortions. Oversizing ensures that the generators have sufficient capacity to maintain performance and reliability under non-linear loading conditions, which are common in environments with a high concentration of electronic equipment. By designing for this extra capacity, data centers can better accommodate fluctuations in load and multifaceted demands that harmonics introduce, ensuring that the emergency generators remain functional when needed most.

In this context, options indicating no adjustments or that generators only need to be matched do not take into account the complexities introduced by harmonics, leading to insufficient solutions for ensuring operational integrity during adverse conditions. Therefore, the correct approach regarding harmonics and emergency generators in a data center is to ensure they are sized appropriately in advance, thus preventing potential failures or performance issues.