In a modern Jet aircraft, landing forces are dampened by what?
A.Nitrogen and viscous fluid
B.Nitrogen
C.Hydrogen
D.Oxygen
LANDING is the clue here - you get contraction and retraction of the struts during landing, therefore answer A would be my choice.
When leaning a mixture:
A: Fuel flow to the combustion chamber reduces
B: Airflow to the combustion chamber reduces
C: Fuel flow to the carburettor reduces
D: Airflow to the carburettor reduces
Leaning the mix concerns the ratio of Air:Fuel being combusted. therefore answer A would be my choice.
After the power stroke, which valves are open?
A. Inlet
B. Outlet
C. Inlet and Outlet
D. None
Answer C. Valve Overlap. The outlet valve is open to excrete the exhaust gases and the inlet valve will open before TDC to take advantage of the reduced exhaust back pressure to aid volumetric efficiency - Pressure Scavenging'.... There is no other answer here.
What AIR:FUEL Mixture will allow the max EGT??
A..Near Idle cut off
B.. 1:9
C..1:1/15:1
D..Cruise settin
If it said the "theoretical air:fuel mix" then C would be the one to go for, but in light of that word missing, I would go for A as near idle cut off = high temperature remaining in the cylinders, therefore detonation, thus higher tempertatures than the other answers offered.
Just my opinion though
Hope it helps.
Craggenmore