NEBOSH General Certificate NG2- Element 5Physical and Psychological Health Questions with complete solution 2023/2024

NEBOSH General Certificate NG2- Element 5Physical and Psychological Health Questions with complete solution 2023/2024What does a daily personal noise exposure of 85bB(A) mean? - correct answer This refers to a daily personal exposure to noise at a level of 85 dB(A) over the course of a working day (eight hours), or an equivalent exposure over a longer or shorter period. This represents the upper exposure action value at and above which action must be taken to reduce employee exposure. 'dB' refers to decibel - the sound pressure level. 'A' refers to the A-weighting matrix, which takes into account the sensitivity of the human ear to noise at different frequencies. What are the limitations of ear defenders and ear plugs? - correct answer One limitation of ear defenders is that the seal between the ear and the protective device may be less than perfect due to long hair, spectacle frames and jewellery, incorrect fitting or the wearing of helmets or face shields. Other limita