Aircraft Engine Instrumentation Concepts

What basic meter is used to indicate cylinder head temperature in most aircraft?

• Electrodynamometer

• Galvanometer

• Thermocouple-type meter

• Voltmeter

How is the indication on a thermocouple-type cylinder head temperature indicator produced?

• resistance changes in two dissimilar metals

• a difference in the voltage between two dissimilar metals

• a current generated by the temperature difference between dissimilar metal hot and cold junctions

• changes in capacitance due to temperature

Which instrument indicates the thrust of a gas turbine engine?

• Exhaust gas temperature indicator

• Turbine inlet temperature indicator

• Engine pressure ratio indicator

• Fuel flowmeter

What does a red triangle, dot, or diamond mark on an engine instrument face or glass signify?

• the maximum operating limit for all normal operations

• the maximum limit for high transients such as starting

• a restricted operating range

• a caution area for engine operation

How is the fuel-flow indicator rotor and needle driven in a motor-impeller and turbine indicating system?

• an electrical signal

• direct coupling to the motor shaft

• a mechanical gear train

• hydraulic pressure

Engine pressure ratio is the total pressure ratio between which two points?

• aft end of the compressor and the aft end of the turbine

• front of the compressor and the rear of the turbine

• front of the engine inlet and the aft end of the compressor

• engine exhaust and engine inlet

What does the exhaust gas temperature (EGT) indicator on a gas turbine engine primarily indicate?

• exhaust temperature

• temperature of the exhaust gases as they pass the exhaust cone

• turbine inlet temperature

• compressor discharge temperature