City and Guilds Level 3 Aeronautical Engineering: Unit 215
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Practice questions for this set
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Percentage equation:
Choose an answer
1 Percent = (Whole / Total) x 100 2 Percent = (Part / Whole) x 100
3 Percent = (Part / Total) x 100 4 20 x 4 = 80
Don't know?
What is the HCF of 18 and 30? 6
Convert 0.375 to a fraction in its simplest form. 3/8
What is the difference between direct and inverse Direct: as one increases, the other decreases. Inverse: as one increases, the other
proportion? decreases.
Estimate 19.8 x 4.1 to 1 significant figure. 20 x 4 = 80
Express 4800 in standard form. 4.8 x 10^3
, Define terminating decimal. A decimal that ends or has a finite number of digits.
Define recurring decimal. A decimal in which a digit or group of digits repeats infinitely.
What's the constant of proportionality? The value that links two variables in direct or inverse proportion, e.g., y = kx
What are 'awkward fractions'? Non-standard fractions that don't simplify easily (e.g. 13/17).
Where are fractions used in engineering? Imperial sizing: e.g., 3/8" bolts or 1 1/2" spanners.
Area of a rectangle: A= lxw
Area of a triangle: A = 1.2 x b x h
Area of a circle: pi x r^2
Percentage equation: Percent = (Part / Whole) x 100
Ratio equation: a : b = a/b
Proportion equation (Direct): y = kx
Proportion equation (Inverse): y = k/x
Standard form equation: a x 10^n
Convert 75 inches to metres (1 inch = 0.025 m). 75 x 0.025 = 1.875 m
Name two SI base units used in aviation. Metre (m) for length, kilogram (kg) for mass.
What is the difference between absolute and relative Absolute = actual difference; Relative = difference as a percentage of true value.
error?
Convert 200 psi to Pascals (1 psi ≈ 7000 Pa) 200 x 7000 = 1 ,400,000
What is the prefix and value of 'kilo'? 10^3
List three US Customary units for fuel. US gallons, pounds (lb), and litres (converted values).
When is absolute error critical in aviation? Fuel loading, pressure readings, or weight-and-balance checks.
What is the symbol for pressure in SI units? Pascal (Pa)
Convert 101.3 kPa to psi. Approx. 14.7 psi
Why is unit consistency essential in aeronautical To avoid catastrophic miscalculations (e.g., Mars Climate Orbiter crash due to unit
formulae? error).
Save
Students also studied
NATE Exam: Air Conditioning and H... RVTI Level 1 Certification Breeze Airways Limitations EXAM N... MAE 36
Teacher 95 terms Teacher 204 terms Teacher 105 terms Teacher
OrangeDuck48379 Preview stuviagrades Preview Max_Millian9 Preview ewa
Practice questions for this set
Learn 1 /7 Study using Learn
Percentage equation:
Choose an answer
1 Percent = (Whole / Total) x 100 2 Percent = (Part / Whole) x 100
3 Percent = (Part / Total) x 100 4 20 x 4 = 80
Don't know?
What is the HCF of 18 and 30? 6
Convert 0.375 to a fraction in its simplest form. 3/8
What is the difference between direct and inverse Direct: as one increases, the other decreases. Inverse: as one increases, the other
proportion? decreases.
Estimate 19.8 x 4.1 to 1 significant figure. 20 x 4 = 80
Express 4800 in standard form. 4.8 x 10^3
, Define terminating decimal. A decimal that ends or has a finite number of digits.
Define recurring decimal. A decimal in which a digit or group of digits repeats infinitely.
What's the constant of proportionality? The value that links two variables in direct or inverse proportion, e.g., y = kx
What are 'awkward fractions'? Non-standard fractions that don't simplify easily (e.g. 13/17).
Where are fractions used in engineering? Imperial sizing: e.g., 3/8" bolts or 1 1/2" spanners.
Area of a rectangle: A= lxw
Area of a triangle: A = 1.2 x b x h
Area of a circle: pi x r^2
Percentage equation: Percent = (Part / Whole) x 100
Ratio equation: a : b = a/b
Proportion equation (Direct): y = kx
Proportion equation (Inverse): y = k/x
Standard form equation: a x 10^n
Convert 75 inches to metres (1 inch = 0.025 m). 75 x 0.025 = 1.875 m
Name two SI base units used in aviation. Metre (m) for length, kilogram (kg) for mass.
What is the difference between absolute and relative Absolute = actual difference; Relative = difference as a percentage of true value.
error?
Convert 200 psi to Pascals (1 psi ≈ 7000 Pa) 200 x 7000 = 1 ,400,000
What is the prefix and value of 'kilo'? 10^3
List three US Customary units for fuel. US gallons, pounds (lb), and litres (converted values).
When is absolute error critical in aviation? Fuel loading, pressure readings, or weight-and-balance checks.
What is the symbol for pressure in SI units? Pascal (Pa)
Convert 101.3 kPa to psi. Approx. 14.7 psi
Why is unit consistency essential in aeronautical To avoid catastrophic miscalculations (e.g., Mars Climate Orbiter crash due to unit
formulae? error).
