Q1. In a gas turbine engine, the power changes are normally made by controlling the amount of:
Q2. An engine pressure ratio (EPR) gauge reading normally shows the ratio of:
Q3. EPR can be defined as the ratio of:
Q4. If air is tapped from a gas turbine HP compressor (engine N2 controlled), the effect on the engine pressure ratio (EPR) and the exhaust gas temperature (EGT) is that:
Q5. If air is tapped from a gas turbine HP compressor, the effect on the engine pressure ratio (EPR) and the exhaust gas temperature (EGT) is that:
Q6. An engine pressure ratio (EPR) can be defined as the ratio of:
Q7. The turbine in a gas turbine engine generates shaft power using:
Q8. Specific fuel consumption for a turbo-prop engine can be expressed in kg per:
Q9. In a gas turbine engine, the propelling jet is generated by:
Q10. Derated or reduced thrust take-offs save engine life primarily due to:
Q11. A flat rated turbofan engine has a constant maximum rated thrust level:
Q12. Consider a flat rated twin-spool turbofan with conventional hydromechanical fuel control. When using maximum take-off thrust at an outside air temperature OAT that is below the flat rated temperature:
Q13. Flat rated jet engines are designed to provide constant maximum take-off thrust up to a certain level of:
Q14. During take-off, the fan in a high by-pass ratio turbofan engine produces:
Q15. A flat rated turbofan will be temperature limited if:
Q16. Regarding a jet engine:I. The maximum thrust decreases as the pressure altitude increases.II. The specific fuel consumption decreases slightly as the pressure altitude increases at constant TAS.
Q17. Regarding a jet engine:I. The maximum thrust increases as the pressure altitude decreases.II. The specific fuel consumption increases slightly as the pressure altitude decreases at constant TAS.
Q18. Regarding a jet engine:I. The maximum thrust decreases as the pressure altitude increases.II. The specific fuel consumption is inversely proportional to pressure altitude, at constant TAS.
Q19. Regarding a jet engine:I. The maximum thrust increases as the pressure altitude decreases.II. The specific fuel consumption is proportional to pressure altitude, at constant TAS.
Q20. Regarding a jet engine:I. The maximum thrust remains constant as the pressure altitude increases.II. The specific fuel consumption remains constant as the pressure altitude increases at constant TAS.
Q21. Regarding a jet engine:I. The maximum thrust remains constant as the pressure altitude increases.II. The specific fuel consumption increases slightly as the pressure altitude increases at constant TAS.
Q22. Regarding a jet engine:I. The maximum thrust remains constant as the pressure altitude decreases.II. The specific fuel consumption remains constant as the pressure altitude decreases at constant TAS.
Q23. Regarding a jet engine:I. The maximum thrust remains constant as the pressure altitude decreases.II. The specific fuel consumption decreases slightly as the pressure altitude decreases at constant TAS.
Q24. Regarding a jet engine:I. The maximum thrust increases slightly as the pressure altitude increases.II. The specific fuel consumption decreases slightly as the pressure altitude increases at constant TAS.
Q25. Regarding a jet engine:I. The maximum thrust decreases slightly as the pressure altitude decreases.II. The specific fuel consumption increases slightly as the pressure altitude decreases at constant TAS.
Q26. Increasing the frequency of variations in thrust setting during normal operation is detrimental to the life of HP turbine blades because:
Q27. The thermal efficiency of a gas turbine engine will increase with a:
Q28. The primary performance indicator (cockpit instrument) for the thrust of a turbofan engine is:
Q29. The static thrust of a turbo-jet, at the selection of full power:1 – equals the product of the exhaust gas mass flow and the exhaust gas velocity2 – is obtained by pressure of the exhaust gas on the ambient air3 – is equivalent to zero mechanical power since the aeroplane is not moving4 – is independant of the outside air temperatureThe combination which regroups all of the correct statements is :