SRS systems

Why do most accidents occur?

• Mechanical failure

• Driver error

• Poor weather conditions

• Electrical failure

What is the purpose of a seat belt retractor?

• To keep the seat belt under slight tension

• To lock the seat belt in position

• To lock the seat belt buckle in position

• To allow the seat belt to move when required

What is the minimum number of sensors that must be triggered for an air bag to deploy?

• One

• Two

• Three

• Clock Spring

Which of the following sensors must be activated first in order for an air bag system to deploy on impact?

• Impact sensor 1

• Safing sensor

• Impact sensor 2

• Clock spring

How long, in milliseconds, does it typically take for an airbag to inflate?

• 50 milliseconds

• 90 milliseconds

• 150 milliseconds

• 250 milliseconds

What happens to an air bag immediately after it is fully inflated?

• It explodes gently

• Air reacts with the nitrogen causing nitrogen dioxide

• It detaches from its container

• It starts to deflate

Why is an un-deployed airbag dangerous?

• It can collapse suddenly

• It can release dangerous fumes

• It can expand suddenly

• The gas can escape

Special protection is required when dealing with live airbags. Which of the following is NOT required?

• Safety glasses or goggles

• Body armour

• Latex Gloves

• Grounding strap

Where should live airbags be stored?

• In a safety cabinet

• Under the workbench

• On a shelf in stores

• In a strong cardboard box

Which statement is true in a severe front end accident?

• Driver hits the bag and the pre-tensioner releases

• Impact identified and pre-tensioner ignition

• Airbag is inflated and the pre-tensioning is complete

• Airbag starts to inflate and pre-tensioner moving