NOTE
TO CHECK YOUR PREPARATION ,PLZ WRITE DOWN YOUR SELECTED OPTIONS (A,B,C) ON ROUGH PAGE AND AT THE END OF QUIZ , VERIFY YOUR SELECTED OPTIONS WITH THE CORRECT OPTIONS GIVEN BELOW
31. In an aircraft flying at supersonic speed, to reduce the air velocity at the compressor, the variable intake.
A. exhaust jet cone area increased.
B. throat area is decreased.
C. throat area is increased.
32. A well designed intake will take advantage of forward speed by.
A. converting kinetic energy into pressure energy.
B. converting velocity energy into kinetic energy.
C. converting pressure energy of the air into kinetic energy.
33. In subsonic multi-engine aircraft, a normal inlet duct will.
A. decrease and then increase in size, front to rear, along length of the duct.
B. increase in size, front to rear, along length of the duct.
C. increase and then decrease in size, front to rear, along length of the duct.
34. What type of intake is one that decreases gradually in area and then increases?.
A. Convergent.
B. Convergent / Divergent.
C. Divergent.
35. In an electrical de-icing system, the main elements will be on.
A. intermittently, 8 times a minute, dependant on OAT .
B. intermittently, 4 times a minute, dependant on OAT .
C. continuously and intermittently.
36. Intakes are designed to.
A. decrease the intake air pressure.
B. decelerate the free air stream flow.
C. accelerate the free air stream flow.
37. The air intake for a gas turbine powered subsonic aircraft would be of.
A. convergent form.
B. divergent form.
C. convergent/divergent form.
38. turboprop engine inlet anti-ice system operates.
A. continuously.
B. cyclically dependant on weather conditions.
C. cyclically independent on weather conditions.
39. What is true for a bellmouth intake?.
A. Pressure increases and velocity decreases.
B. Velocity increases and pressure decreases.
C. Pressure and velocity decrease.
40. What is the system that breaks up ice formations on a turboprop engine nose cowl called?.
A. Nose cowl heating.
B. De-icing.
C. Anti-icing.
ABOVE QUESTIONS WITH ANSWERS
41. In a variable geometry intake, the velocity of the air on the engine compressor
face is controlled by.
A. ramp and spill doors.
B. intake augmentation doors.
C. shock-wave pattern, ramp and spill doors.
ABOVE QUESTIONS WITH ANSWERS
31. In an aircraft flying at supersonic speed, to reduce the air velocity at the compressor, the variable intake.
A. exhaust jet cone area increased.
B. throat area is decreased.
C. throat area is increased.
Ans : throat area is decreased.
Explanation: Rolls Royce The Jet Engine Page 247 refers.
32. A well designed intake will take advantage of forward speed by.
A. converting kinetic energy into pressure energy.
B. converting velocity energy into kinetic energy.
C. converting pressure energy of the air into kinetic energy.
Ans : converting kinetic energy into pressure energy.
Explanation: This is known as Ram effect.
33. In subsonic multi-engine aircraft, a normal inlet duct will.
A. decrease and then increase in size, front to rear, along length of the duct.
B. increase in size, front to rear, along length of the duct.
C. increase and then decrease in size, front to rear, along length of the duct.
Ans : increase in size, front to rear, along length of the duct.
Explanation: Page 3-2 Jeppesen Aircraft Gas Turbine Powerplants refers.
34. What type of intake is one that decreases gradually in area and then increases?.
A. Convergent.
B. Convergent / Divergent.
C. Divergent.
Ans : Convergent / Divergent.
Explanation: The fixed plug supersonic intake is a con/di shaped intake.
35. In an electrical de-icing system, the main elements will be on.
A. intermittently, 8 times a minute, dependant on OAT .
B. intermittently, 4 times a minute, dependant on OAT .
C. continuously and intermittently.
Ans : continuously and intermittently.
Explanation: Rolls Royce the Jet Engine Page 150 refers.
36. Intakes are designed to.
A. decrease the intake air pressure.
B. decelerate the free air stream flow.
C. accelerate the free air stream flow.
Ans : decelerate the free air stream flow.
Explanation: Jeppesen Aircraft Gas Turbine Powerplant page 3-2 refers.
37. The air intake for a gas turbine powered subsonic aircraft would be of.
A. convergent form.
B. divergent form.
C. convergent/divergent form.
Ans : divergent form.
Explanation: Jeppesen Aircraft gas turbine Powerplant page 3-2 refers.
38. turboprop engine inlet anti-ice system operates.
A. continuously.
B. cyclically dependant on weather conditions.
C. cyclically independent on weather conditions.
Ans : continuously.
Explanation: Whilst the blades may be intermittent the intake mat is on continuously.
39. What is true for a bellmouth intake?.
A. Pressure increases and velocity decreases.
B. Velocity increases and pressure decreases.
C. Pressure and velocity decrease.
Ans : Velocity increases and pressure decreases.
Explanation: A bellmouth intake is only used on helicopters or static test beds to improve aerodynamic efficiency. It is a convergent duct therefore pressure decreases and velocity increases.
40. What is the system that breaks up ice formations on a turboprop engine nose cowl called?.
A. Nose cowl heating.
B. De-icing.
C. Anti-icing.
Ans : De-icing.
Explanation: Whilst the nose cowl is heated (by air or oil) the question is about removing ice after it has formed so deicing is correct.
41. In a variable geometry intake, the velocity of the air on the engine compressor
face is controlled by.
A. ramp and spill doors.
B. intake augmentation doors.
C. shock-wave pattern, ramp and spill doors.
Ans : shock-wave pattern, ramp and spill doors.
31. In an aircraft flying at supersonic speed, to reduce the air velocity at the compressor, the variable intake.
A. exhaust jet cone area increased.
B. throat area is decreased.
C. throat area is increased.
32. A well designed intake will take advantage of forward speed by.
A. converting kinetic energy into pressure energy.
B. converting velocity energy into kinetic energy.
C. converting pressure energy of the air into kinetic energy.
33. In subsonic multi-engine aircraft, a normal inlet duct will.
A. decrease and then increase in size, front to rear, along length of the duct.
B. increase in size, front to rear, along length of the duct.
C. increase and then decrease in size, front to rear, along length of the duct.
34. What type of intake is one that decreases gradually in area and then increases?.
A. Convergent.
B. Convergent / Divergent.
C. Divergent.
35. In an electrical de-icing system, the main elements will be on.
A. intermittently, 8 times a minute, dependant on OAT .
B. intermittently, 4 times a minute, dependant on OAT .
C. continuously and intermittently.
36. Intakes are designed to.
A. decrease the intake air pressure.
B. decelerate the free air stream flow.
C. accelerate the free air stream flow.
37. The air intake for a gas turbine powered subsonic aircraft would be of.
A. convergent form.
B. divergent form.
C. convergent/divergent form.
38. turboprop engine inlet anti-ice system operates.
A. continuously.
B. cyclically dependant on weather conditions.
C. cyclically independent on weather conditions.
39. What is true for a bellmouth intake?.
A. Pressure increases and velocity decreases.
B. Velocity increases and pressure decreases.
C. Pressure and velocity decrease.
40. What is the system that breaks up ice formations on a turboprop engine nose cowl called?.
A. Nose cowl heating.
B. De-icing.
C. Anti-icing.
ABOVE QUESTIONS WITH ANSWERS
41. In a variable geometry intake, the velocity of the air on the engine compressor
face is controlled by.
A. ramp and spill doors.
B. intake augmentation doors.
C. shock-wave pattern, ramp and spill doors.
ABOVE QUESTIONS WITH ANSWERS
31. In an aircraft flying at supersonic speed, to reduce the air velocity at the compressor, the variable intake.
A. exhaust jet cone area increased.
B. throat area is decreased.
C. throat area is increased.
Ans : throat area is decreased.
Explanation: Rolls Royce The Jet Engine Page 247 refers.
32. A well designed intake will take advantage of forward speed by.
A. converting kinetic energy into pressure energy.
B. converting velocity energy into kinetic energy.
C. converting pressure energy of the air into kinetic energy.
Ans : converting kinetic energy into pressure energy.
Explanation: This is known as Ram effect.
33. In subsonic multi-engine aircraft, a normal inlet duct will.
A. decrease and then increase in size, front to rear, along length of the duct.
B. increase in size, front to rear, along length of the duct.
C. increase and then decrease in size, front to rear, along length of the duct.
Ans : increase in size, front to rear, along length of the duct.
Explanation: Page 3-2 Jeppesen Aircraft Gas Turbine Powerplants refers.
34. What type of intake is one that decreases gradually in area and then increases?.
A. Convergent.
B. Convergent / Divergent.
C. Divergent.
Ans : Convergent / Divergent.
Explanation: The fixed plug supersonic intake is a con/di shaped intake.
35. In an electrical de-icing system, the main elements will be on.
A. intermittently, 8 times a minute, dependant on OAT .
B. intermittently, 4 times a minute, dependant on OAT .
C. continuously and intermittently.
Ans : continuously and intermittently.
Explanation: Rolls Royce the Jet Engine Page 150 refers.
36. Intakes are designed to.
A. decrease the intake air pressure.
B. decelerate the free air stream flow.
C. accelerate the free air stream flow.
Ans : decelerate the free air stream flow.
Explanation: Jeppesen Aircraft Gas Turbine Powerplant page 3-2 refers.
37. The air intake for a gas turbine powered subsonic aircraft would be of.
A. convergent form.
B. divergent form.
C. convergent/divergent form.
Ans : divergent form.
Explanation: Jeppesen Aircraft gas turbine Powerplant page 3-2 refers.
38. turboprop engine inlet anti-ice system operates.
A. continuously.
B. cyclically dependant on weather conditions.
C. cyclically independent on weather conditions.
Ans : continuously.
Explanation: Whilst the blades may be intermittent the intake mat is on continuously.
39. What is true for a bellmouth intake?.
A. Pressure increases and velocity decreases.
B. Velocity increases and pressure decreases.
C. Pressure and velocity decrease.
Ans : Velocity increases and pressure decreases.
Explanation: A bellmouth intake is only used on helicopters or static test beds to improve aerodynamic efficiency. It is a convergent duct therefore pressure decreases and velocity increases.
40. What is the system that breaks up ice formations on a turboprop engine nose cowl called?.
A. Nose cowl heating.
B. De-icing.
C. Anti-icing.
Ans : De-icing.
Explanation: Whilst the nose cowl is heated (by air or oil) the question is about removing ice after it has formed so deicing is correct.
41. In a variable geometry intake, the velocity of the air on the engine compressor
face is controlled by.
A. ramp and spill doors.
B. intake augmentation doors.
C. shock-wave pattern, ramp and spill doors.
Ans : shock-wave pattern, ramp and spill doors.
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