The efficiency of a jet engine is higher at
A.Lower altitudes
B.Higher altitudes
C.Low speeds
D.High speeds
E.High speeds and low altitudes
A.Lower altitudes
B.Higher altitudes
C.Low speeds
D.High speeds
E.High speeds and low altitudes
A.Cast iron
B.Nickel alloy
C.Stainless steel
D.Alloy steel
E.High speed steel
A.Combustion system
B.Exhaust muffling
C.Intake muffling
D.Fuel injection equipment
E.None of the above
A.High compression ratio
B.Fine atomisation of fuel
C.High charge density
D.Large quantity of excess air
E.None of the above
A.Brayton
B.Otto cycle
C.Diesel cycle
A.1%
B.0.50%
C.0.10%
D.0.05%
E.0.01%