Results
Q1. If the specific gravity of a fuel is known to be 0.7, 100 imperial gallons of it will weigh:
Correct answer is – 700 lb
Q2. A fuel grade which is used in typical aircraft engines is:
Correct answer is – AVGAS 100
Q3. The “anti-knock” value of a fuel is its:
Correct answer is – resistance to detonation
Q4. The differences between AVGAS 100 and AVGAS 100LL are: Colour Anti-knock value
Correct answer is – different same
Q5. The octane rating of a fuel is determined by comparison with mixtures of:
Correct answer is – heptane and iso-octane
Q6. In the internal combustion engine, detonation occurs due to:
Correct answer is – excessive combustion temperatures and pressures
Q7. The calorific value of a fuel is the:
Correct answer is – heat energy in the fuel
Q8. The octane rating of a particular grade of fuel is given as 100/130, this indicates that:
Correct answer is – with a weak mixture it will act as 100 octane, and with a rich mixture it will act as a 130 octane fuel
Q9. Tetra-ethyl lead is added to some aviation fuel to:
Correct answer is – decrease the risk of detonation
Q10. If the vent pipe of an aircraft’s fuel tank becomes blocked, it will cause:
Correct answer is – the pressure in the tank to fall when fuel is used
Q11. Detonation is liable to occur in the cylinders:
Correct answer is – with a weak mixture and high cylinder head temperature
Q12. Pre-ignition refers to the condition when:
Correct answer is – the mixture is ignited by abnormal conditions within the cylinder before the normal ignition point
Q13. An exhaust gas temperature gauge is powered by:
Correct answer is – A thermocouple which generates its own voltage.
Q14. Flame Rate is the term used to describe the speed at which:
Correct answer is – the mixture burns within the cylinder
Q15. The colour of 100/130 grade low lead fuel is:
Correct answer is – blue
Q16. Diesel fuel (AVTUR) is:
Correct answer is – heavier per unit volume than AVGAS
