Illustrate briefly the two classes of glare which employees might encounter in their work environment because of poor quality of lighting.
The Fan Laws define the relation of volume flow, power and pressure against the fan speed. How do the volume flow, pressure and power differ with the fan speed ratio if the speed is varied whilst diameter and density remain stable?
Name the test equipment that Ventilation Engineer has to use in order to measure the efficiency of a Local Exhaust Ventilation system. Your answer must mention which instruments that measure the corresponding physical parameters.
In brief elaborate on three common indices of thermal stress used in assessing employee’s comfort in a hot working environment.