For example, the phrase spondylosis of the lumbar spine means degenerative changes such as osteoarthritis of the vertebral joints and degenerating intervertebral discs (degenerative disc disease) in the low back.
Special offers. MCB Selection. MCBs or Miniature Circuit Breakers are intended to give protection against overloads and short circuits, which can cause damage to cables and equipment. MCBs have current ratings (6A, 10A etc.) above which they will start to open or trip and give protection to the equipment.
All four sections contain multiple-choice questions (MCQs). AUD, FAR, and REG sections have an additional portion for task-based simulation (TBS) questions; BEC has a portion for written communication questions, but no TBS questions. total reported score of 75 is required to pass each section. This is not a percent correct score and cannot be interpreted as a percentage. The total score in the AUD, FAR and REG sections is a weighted combination of scaled scores from the multiple-choice and task-based simulation questions.