Ch30 Air Brakes - Systems & Circuits

Primary brake circuits are commonly color coded as what color air lines?

• Blue

• Green

• Black

• Red

What type of valves are critical devices used to speed up the flow of air during brake applications and release?

• Relay

• Exhaust

• Air brake

• Anti-compounding

Two color-coded flexible hoses connect the tractor and trailer air system. What color is used for the supply/emergency circuit?

• Yellow

• Red

• Green

• Blue

What type of valve is this?

• Quick Release Valve

• Relay Valve

• ABS Modulator Valve

• Safety Valve

What controls air system pressure by stopping and starting compressor loading?

• Air dryer

• Governor

• Air reservoir

• Check valves

What type of valve is this?

• Quick Release Valve

• Relay Valve

• Modulator Valve

• Safety Valve

Which of the following is the source of power for the air brake system?

• Actuator

• Primary circuit

• Air compressor

• Governor

What type of valve removes water and oil that may contaminate supply system air?

• Drain

• Pressure protection

• Inlet pressure regulating

• Turbocharger cut-off

Air dryers use a replaceable desiccant cartridge to trap oil and water discharged from the compressor by a process known as _____________.

• combustion

• pressure-protection

• adsorption

• consumption

What type of valve is this?

• Quick Release Valve

• Relay Valve

• ABS Modulator Valve

• Safety Valve