Intro Jet Engine Quiz - Advanced

15 Questions | By Lawrie031 | Last updated: Mar 21, 2022 | Total Attempts: 686

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Introductory Jet Engine quiz for those who have some prior knowledge of Jet Engines. Help to establish level of prior learning in order to correctly differentiate learners.

Questions and Answers

1.

WHICH OF THE FOLLOWING TYPES OF ENGINE DOES NOT USE ATMOSPHERIC AIR FOR COMBUSTION
- A.
  
  ROCKET
- B.
  
  PULSEJET
- C.
  
  RAMJET
2.

WHAT EFFECT DOES A DIVERGENT DUCT HAVE ON AIRFLOW
- A.
  
  AN INCREASE IN PRESSURE AND DECREASE IN VELOCITY
- B.
  
  AN INCREASE IN PRESSURE AND INCREASE IN VELOCITY
- C.
  
  A DECRASE IN PRESSURE
3.

DURING SUPERSONIC FLIGHT WHAT MAJOR AIRCRAFT COMPONENT CAN NOT WITHTAND SUPERSONIC VELOCITY AIRFLOW
- A.
  
  THE TAIL
- B.
  
  THE ENGINE
- C.
  
  THE INTAKE
4.

IN AN AXIAL-FLOW ENGINE, BY WHAT MEANS IS HIGH-VELOCITY , LOW PRESSURE AIR CONVERTED TO LOW-VELOCITY, HIGH PRESSURE AIR
- A.
  
  ACTION OF SINGLE INTAKE DIFFUSER
- B.
  
  ACTION OF STATOR BLADES AT EACH STAGE OF COMPRESSION
5.

WHAT IS THE MOST SERIOUS DISADVANTAGE OF AXIAL-FLOW COMPRESSOR
- A.
  
  LOW COMPRESSION RATIO
- B.
  
  HIGH STARTING POWER NEEDS
- C.
  
  HIGH TENDENCY TO STALL
6.

WITH REFERENCE TO AXIAL-FLOW ENGINE THE ANGLE OF ATTACK IS THE ANGLE AT WHICH THE AIRFLOW
- A.
  
  STRIKES THE ROTOR BLADES
- B.
  
  BECOMES TURBULANT OVER THE UPPER FOIL SURFACE
7.

WHAT THREE ENGINE OPERATING PARAMETERS CAUSE THE AIRFLOW ANGLE OF ATTACK TO VARY
- A.
  
  ENGINE RPM, HUMIDITY AND COMPRESSOR DISCHARGE PRESSURE
- B.
  
  ENGINE, RPM, COMPRESSOR-INLER TEMP AND COMPRESSOR DISCHARGE PRESSURE
8.

ENGINE CHOKING REFERS TO WHICH OF THE FOLLOWING TERMS
- A.
  
  HIGH COMPRESSOR INLET AIR TEMP
- B.
  
  STALL DUE TO AN EXCESS VOLUME OF AIR IN THE REAR OF COMPRESSOR
9.

INLET GUIDE VANES CHANGE THE DIRECTION OF THE AIR ENTERING AND LEAVING THE COMPRESSOR IN WHAT MANER
- A.
  
  BY SWIRLING IT AS IT ENTERS AND LEAVES
- B.
  
  BY SWIRLING IT AS IT ENTERS AND STRAIGHTENING IT OUT AS IT LEAVES
10.

BLEED AIR FOR UNLOADING THE COMPRESSOR DURING STARTING , COCKPIT PRESSURIZATION AND HEATING, ENGINE ANTI-ICING, FUEL TANK , PRESSURIZATION AND VARIOUS OTHER PURPOSES IS TAPPED FROM WHICH OF THE FOLLOWING SOURCES
- A.
  
  THE COMPRESSOR FOR LOW PRESSURE AND TEMPERATURE NEEDS ONLY
- B.
  
  DIFFERENT STAGES OF THE COMPRESSOR DEPENDING ON THE PRESSURE AND TEMPERATURE NEEDED
11.

WHAT IS THE PRIMARY FUNCTION OF THE COMBUSTION SECTION
- A.
  
  TO PROVIDE IGNITION
- B.
  
  TO BURN THE FUEL-AIR MIXTURE
12.

APPROXIMATELY WHAT % OF AIR ENTERING THE COMBUSTION CHAMBER IS MIXED WITH FUEL FOR COMBUSTION
- A.
  
  40 %
- B.
  
  35%
- C.
  
  25%
13.

APPROXIMATELY WHAT % OF AIR ENTERING THE COMBUSTION CHAMBER SERVES AS FLAME CONTROL
- A.
  
  80%
- B.
  
  75%
- C.
  
  65%
14.

WHICH OF THE FOLLOWING IS NOT A BASIC ELEMENT OR SYSTEM OF COMBUSTION CHAMBER
- A.
  
  CASING
- B.
  
  INNER LINER
- C.
  
  AIR POLLUTION EMISION REDUCTION
15.

WHICH OF THE FOLLOWING IS NOT A BASIC TYPE OF COMBUSTION CHAMBER
- A.
  
  ANNULAR
- B.
  
  CAN-ANNULAR
- C.
  
  BASKET-CHAMBER