My Powerplant 8257-8309

A Bourdon-tube instrument may be used to indicate

1. Pressure, 2. Tempurature

An indication of unregulated power changes that result in continual drift of manifold pressure indication on a turbosupercharged aircraft engine is known as

Bootstrapping.

1) Generally, when a turbine engine indicates high EGT for a particular EPR (when there is no significant damage), it means that the engine is out of trim. 2) Some turbine-powered aircraft use RPM as the primary indicator of thrust produced, others use EPR as the primary indicator. Which statements, are true?

Both No. 1 and No 2 are true.

1)Powerplant instrument range markings show whether the current state of powerplant operation is normal, acceptable for a limited time, or unauthorized 2) Powerplant instrument range markings are based on installed engine operating limits which may not exceed (but are not necessarily equal to) those limits shown on the engine Type Certificate Data Sheet. Which statements are true?

Both No. 1 and No. 2 are true.

Intruments that measure relatively high fluid pressures, such as oil pressure gauges, are usaually what type?

Bourdon tube.

What instrument conditions is acceptable and does NOT require immediate correction?

Case paint Chipped.

Instruments that provide readings of low or negative pressure, such as manifold pressure gauges, are usaally what type?

Daiphragm or bellows.

What instrument indicates the thrust of a gas turbine engine?

Engine pressure ratio indicator.

The RPM indication of a synchronous ac motor-tachometer is governed by the generator

Frequency.

The fuel flowmeter used with a continuous-fuel injection system installed on an aircraft horizontally opposed reciprocating engine measures the fuel pressure drop across the

Fuel Nozzles

What unit most accurately indicates fuel consumption of a reciprocating engine?

Fuel flowmeter.

In addition to fuel quantity, a computerized fuel system (CFS) with totalizer-indicator provides indication of what?

Fuel time remaining at current power settings.

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

Galvanometer

In regard to using a turbine engine oil analysis program, what is NOT true?

Generally, an accurate trend forcast may be made after an engine's first oil analysis.

What instrument discrepancies require replacement of the instrument?

Glass cracked, Will not zero out, Pointer loose on shaft, Fogged.

The principle fault in the pressure type fuel flowmeter indicating system, intalled on a horizontally opposed continuous-flow fuel injected aircraft reciprocating engine, is that a plugged fuel injection nozzle will cause a

Higher than normal fuel flow indication.

In a turbine engine, where is the turbine discharge pressure indicator sensor located

Immediately aft of the last turbine stage.

What statement is correct concerning a thermo-couple type tempurature indicating instrument system?

It requires no external power source.

What is the primary purpose of the tachometer on an axial-compressor turbine engine?

Monitor engine RPM during starting and to indicate overspeed condtions.

If the thermocouple leads were inadvertently crossed at installation, what would the cylinder temperature gauge pointer indicate?

Moves off-scale on the zero side of the meter.

Why do helicopeters require a minimum of two synchronous tachometer systems?

One indicates engine RPM and the other main rotor RPM

On a twin-engine aircraft with fuel-injected reciprocating engines, one fuel-flow indicator reads conderably higher than the other in all engine operating configurations. What is the probably cause of this indication?

One or more fuel nozzles are clogged.

1) Engine pressure ratio (EPR) is a ratio of the exhaust gas pressure to the engine inlet air pressure, and indicates teh thrust produced. 2) Engine pressure ratio (EPR) is a ratio of the exhaust gas pressure to the engine inlet air pressure, and indicates volumetric efficiency. Which statements are true?

Only NO. 1 is true.

In what units are turbine engine tachometers calibrated?

Percentage of engine RPM

What following types of electric motors are commonly used in eletric tachometers?

Synchronous motors.

What is a primary engine instrument?

Tachometer

Where are the hot and cold junctions located in an engine cylinder tempurature indicating system?

The hot junction is located at the cylinder and the cold junction is located at the instrument.

What unit in a tachometer system sends information to the indicator?

The three-phase ac generator.

What statement is true regarding a thermocouple-type cylinder head temperature measuring system?

The voltage output of a thermocouple system is determinded by the temperature difference between the two end of the thermocouple.

What would be the possible cause if a gas turbine engine has high exhaust gas temperature, high fuel flow, and low RPM at all engine power settings?

Turbine damage or loss of turbine efficiency.

The exhaust gas temperature (EGT) indicator on a gas turbine engine provides a relative indication of the

Turbine inlet temperature.

what instrument on a gas turbine engine should be monitored to minimize the possiblity of a "hot" start?

Turbine inlet tempurature.

The indication on a thermocouple-type cylinder head temperature indicator is produced by

a current generated by the temperature differnece between dissimilar metal hot and cold junctions.

On an aircraft turbine engine, operating at a constant power, the application of engine anti-icing will result in

a noticeable shift in EPR. (Engine pressure ratio)

The fuel-flow indicator rotor and needle for a motor-impeller and turbine indicating system is driven by

an eletrical signal

In an aircraft equipped with a pressure-drop type fuel-flow indicating system, if one of the injector nozzles becomes restricted, this would cause a decrease in fuel flow with

an increase fuel flow indication on the gauge.

Thermocouple leads

are designed for a specific installation and may not be altered.

Jet engine thermocouples are usually contructed of

chromel-alumel.

Engine pressure ratio is determined by

dividing turbine outlet total pressure by engine inlet total pressure.

A common type of electrically operated oil temperature gauge utilizes

either a wheatstone bridge of ratiometer circuit.

The engine pressure ratio (EPR) indicator is a direct indication of

engine thrust being produced

Engine oil temperature gauges indicate the temperature of the oil

entering the oil cooler.

Basically, the indicator of a tachometer system is responsive to change in

frequency.

Engine pressure ratio is the total pressure ratio between the

front of the compressor and the rear of the turbine.

The fuel-flow indication data sent from motor driven impeller and turbine, and motorless type fuel flow tranmitters is a meaure of

fuel mass-flow

The fuel-flow indication system used with many fuel-injected opposed engine airplanes utilizes a measure of

fuel pressure

The purpose of an exhaust gas analyzer is to indicate the

fuel/air ratio being burned in the cylinders.

A manifold pressure gauge is designed to

indicate absolute pressure in the intake manifold.

A change in engine manifold pressure has a direct effect on the

mean effective cylinder pressure.

The EGT gauge used with reciprocating engines is primarily used to furnish temperature readings in order to

obtain the best mixture setting for fuel efficiency.

A complete break in the line between the manifold pressure gauge and the induction system will be indicated by the gauge registering

prevailing atmospheric pressure

A red triangle, dot, or diamond mark on a engine instrument face or glass indicates

the maximum limit for high transient such as starting.

Motor driven impeller and turbine fuel flow transmitters are designed to transmit data

using aircraft electrical system power