M9.5 Cat B

Environmental stresses are

• caused by noise, fumes, heat and vibration

• tolerated by everyone equally

• not normally cumulative

Employers must provide their employees with personal ear protectors if the noise level reaches

• 70 dB

• 85 dB

• 60 dB

The maximum allowable noise dose is

• 85 dB

• any combination of noise and time which exceeds 90 dB TWA

• 90 dB for 24 hours

Environmental capture' is a type of error possible when an engineer does the same job repeatedly

• but on different types of aircraft

• on the same type of aircraft

• in a short timescale

In the UK, an air-side ramp vehicle driver is most likely to go deaf in

• the left ear

• both ears

• the right ear

Up to what proximity to an aircraft with engines running is the use of ear protection recommended for maintenance personnel?

• 200 - 300 metres

• 20 - 30 metres

• 2 - 3 metres

Studies have shown that working outside in a temperature of 55°F will have what effect on hand dexterity?

• Around 50%

• Very slight

• None

When working with bright lights consideration should be given to

• blurred image

• shadows

• glare

Which of the following is true?

• Noise affects the standard of work proportionately with the level of the noise

• Noise does not affect a person's standard of work

• Noise does affect the standard of work with certain people

The effect on an engineer of environmental noise is

• it improves concentration and quality of work

• it decreases concentration and quality of work

• it has no affect on concentration of quality of work