PP 11

The overspeed governor in hydro mechanical fuel pump sense RPM. Only. Rpm & pressure.

A FCU may be calibrated. Only with the apprvd equip. and instruction on a flow bench. Using engine operational data.

After continued operation of a gas turbine engine, the pilot complains of loss power, what can mechanic do?. Trim the fuel control. Replace the fuel nozzle.

What two field adjustments can be made to turbo jet engine?. Max rpm & idle rpm. Compressor pressure & turbine temperature.

Beside RPM, EGT & Compressor inlet temp. What must be known to set the fuel flow in flight?. Compressor inlet pressure & airspeed (power lever). Turbine exhaust pressure & fuel temperature.

What size of contaminants does a fuel filter remove?. 10-25 microns. 50-100 microns.

On engine using variable displacement fuel pumps the fuel press. Delivered to the nozzle is. Proportional to the fuel from the conroller. Independent of fuel controller.

Where is the dump valve located. Lowest point in the manifold. Highest point in the manifold.

Ignition system used on turbo jet engine are. Hermetically sealed. Open flame type.

The spec. grav. Of JP-4 is 0.777. JP-1 is 0.808. An acft filled with 200 Gal of JP-4 will. An acft shld not hold this amount of jp-1 because it is heavier. Can hold the same amount without issues.

Trimming a FCU should not take place if. Intake icing is present. Ambient temperature is low.

A temp. datum valve in an electronic fuel control. Trim metered fuel after the fuel control. Increases fuel flow before FCU.

What must mechanic know before he can trim a fuel control. Ambient temp., field barometric pressure. Turbine inlet temperature only.

A fuel pressurizing valve is used in conjunction with. Primary & secondary manifold system. Only the primary manifold.

Low volatile synthetic oil is used in turbine engine because. Greater heat range efficiency. Lower viscosity at start-up.

Synthetic oil should. Never be mixed brands or type. Be mixed with mineral oils if necessary.

Dilution of oil in a turbine engine is caused by. Defective shaft seal. Excessive engine speed.

The spectro-analysis does what. Informs of floating contaminants or when a metallic contents in the oil. Measures oil viscosity only.

Low volatility oil is used in turbine engine because. It has less evaporatio loss at high alt. It increases oil flow at low temperature.

E.PR. is what. P1/p2 ratio of compressor inlet pressure to turbine discharge press. Turbine outlet pressure divided by ambient pressure.

How do they prevent oil from draining into the accessory gear box in a dry sump engine. Check valve between oil pump & sump. By sealing the gearbox vents.

Starting system must continue supplying torque until. Engine runs to a predetermined rpm. Fuel control is fully trimmed.

A starter generator is. Always engage to engine shaft. Engaged only during ground start.

A speed sensitive control operates on. Flyweights & switches. Oil pressure only.

How are TIT probes connected so they will still give an indication regardless of partial sys. malfunction. In parallel. In series.

What is the ignition system used on gas turbine engine. High intensity capacitor discharge. Low voltage spark system.

Water alcohol or augmenter systems are used in gas turbine engines to?. Cool the engine fuel/air mixture. Increase turbine exhaust temperature.

When using water injection it is impt. To use de-mineralized water to. Minimize mineral build up on compressor blades. Increase water evaporation rate.

An acft continually operated on gravel runways, pilot complains of compressor stalls, mech would check. For errosion of compressor section. For fuel contamination only.

IGV anti icing incorporates. Bleed air. Electric heating coils.