Forced induction

What is the purpose of a turbocharger?

• To increase the power output of an engine by compressing the air entering the combustion chamber.
• To decrease the fuel efficiency of an engine
• To reduce the power output of an engine
• To improve the engine's cooling system

Engine horsepower depends on the amount of ​ (a)   an engine burns and the ​ (b)   of the charge, not the volume.

• fuel and air
• density
• fuel
• air

What component cools and increases the density of the compressed air?

Answer explanation

I hope you wrote:

Intercooler

What is the purpose of an intercooler?

• To increase fuel efficiency

  and improve speed

• To reduce engine noise
• To increase the density of the compressed air

• To cool the compressed air before it enters the engine

What is the maximum recommended pressure for testing an air cooler for leaks?

• 50 psi

• 100psi

• SDS

• Manufacturer's specs

Answer explanation

Manufacturer's Specs surely

The volumetric efficiency of an engine fitted with a forced induction system would be...

• unchanged

  100%

• higher

  above 100%

The term used to describe the ratio between the engine cylinder volume and the actual volume of air that is able to be drawn into the cylinder is:

• Ram air

• VGT

• Volumetric Efficiency

The purpose of the blow-off valve in a forced induction system is to:

• Release boost pressure

  from intake with throttle closed

• Reduce fuel consumption
• Work with the ECM to vary boost pressure

• Improve exhaust sound

Series turbocharging...

• Has the compressor output from one turbo charger feeding into input of another

• Sequential turbocharging
• Twin-scroll turbocharger

What is necessary for a variable nozzle turbocharger to produce peak manifold boost?

• Vanes fully open

• Vanes are by-passed

• Increase the nozzle size to restrict exhaust gas flow
• Vanes are almost closed