Test on Aircraft Engine Instrument Systems
Aircraft Engine Instrument Systems: Student Guide & SEO Tips
Test: Aircraft Engine Instrumentation
20 questions
Question 1: Is turbojet Engine Pressure Ratio (EPR) calculated as the ratio of total inlet pressure to total turbine discharge pressure?
A. Ano
B. Ne
Explanation: Turbojet EPR is defined as the ratio between total turbine discharge pressure to total inlet pressure, not the reverse. It is also described as the ratio of turbine discharge total pressure to compressor inlet total pressure.
Question 2: The fuel flow of a horizontally opposed, fuel-injected reciprocating engine is measured by the pressure gauge through the pressure drop across injector nozzles.
A. Ano
B. Ne
Explanation: The pressure gauge measures the fuel flow of a horizontally opposed, fuel-injected reciprocating engine by the pressure drop across injector nozzles.
Question 3: Reciprocating engine tachometers are calibrated in hundreds of RPM.
A. Ano
B. Ne
Explanation: The study materials explicitly state that reciprocating engine tachometers are calibrated in hundreds of RPM.
Question 4: A bourdon tube mechanism is used to measure the exhaust gas temperature of a turbine engine.
A. Ano
B. Ne
Explanation: A set of thermocouples arranged in an averaging circuit is used to measure the exhaust gas temperature of a turbine engine. A bourdon tube mechanism is used to measure oil pressure in a reciprocating engine.
Question 5: The pressure measured by a torquemeter is produced by the exhaust gases of the engine.
A. Ano
B. Ne
Explanation: A torquemeter measures pressure produced in a torque sensor through oil, which is proportional to the strain in the torsional shaft that drives the reduction gears of the turboprop engine, not by exhaust gases.