Naturally aspirated vs turbocharged engines

SA.1.Ex.3 Consider the speed-torque diagram which represents the operating ranges for an engine with and without a turbocharger.

Ex.3 What are the differences between a turbo charged engine and a naturally aspirated engine?

Select all statements that apply.

 

1)A turbocharged engine can have a smaller cylinder volume andstill provide similar performance as a naturally aspirated enginesince it can operate at higher shaft speeds.

2)Turbo charged engines have lower friction losses than anaturally aspirated engine with similar performance.

3)The main reason a turbo charged engine can have a highertorque than a naturally aspirated engine of the same cylindervolume is that it can get more air into the cylinders.

4)Naturally aspirated engines often respond quicker when thedriver press the accelerator pedal to the floor, than turbo chargedengines.

5)Friction losses are much smaller in a turbo charged enginethan in a naturally aspirated engine with the same cylindervolume.

Shaft Torque (Nm) 200 150 100 50 O -50 1000 2000 3000 4000 5000 6000 Engine speed (rpm) 7000