performance and power

#1. The Manifold Pressure Gauge fitted to a supercharged engine measures:

• AThe absolute pressure in the induction manifold.
• BThe differential pressure across the supercharger compressor.
• CThe ratio between the atmospheric pressure and the cam rise at the supercharger inlet.
• DThe pressure upstream of the throttle valve.

#2. An Automatic Boost Control Unit:

• APrevents detonation and dissociation in the cylinder.
• BMaintains an automatic preset boost pressure.
• CMaintains the correct mixture strength for the boost pressure set.
• DSets the posiion of the waste gate to ensure the preset boost is maintained.

#3. The use of a turbo-charger on an engine will:

• AImprove the exhaust scavenging efficiency.
• BRaise the volumetric efficiency of the engine.
• CCause an automatic rise in the engine R.P.M. as altitude is gained.
• DCause an automatic rise in engine power as altitude is gained.