Term
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 PRM as the primary indicator of thrust produced, others use EPR as the primary indicator.
Regarding the above statements,
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Definition
Both No. 1 and No. 2 are true.
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Term
Which of the following instrument descrepancies require replacement of the instruments?
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Definition
2,4,5,8.
Glass cracked. Will not zero out.Pointer
loose on shaft. Fogged.
GWPF not GCLF RGWL
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Term
A red triangle, dot , or diamond mark
on an engine instrument face or glass
indicates
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Definition
the maximum limit for high
transients such as starting.
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Term
A change in engine manifold
pressure has a direct effect
on the
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Definition
mean effective cylinder pressure.
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Term
The fuel flow indication system
used with many fuel-injected
opposed engine airplanes
utilizes a measure of
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Definition
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Term
In addition to fuel quantity, a computerized fuel system (CFR) with a totalizer indicator provides indication of how many of the following?
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Definition
Three
1. Fuel flow rate. 2. Fuel used since reset or initial start up. 3. Fuel time remaining at current power setting. 4.Fuel temperature.
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Term
Instruments that provide readings of
low or negative pressure, such as
manifold pressure gauges, are
usually what type?
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Definition
Diaphragm or bellows.
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Term
What instrument on a gas turbine
engine should be monitored to
minimize the possibility of a”hot” start?
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Definition
Turbine inlet temperature.
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Term
If the thermocouple leads
were inadvertently crossed
at installation, what would
the cylinder temperature
gauge pointer indicate?
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Definition
Moves off scale on the
zero side of the meter.
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Term
In an aircraft equipped with
a pressure-drop type fuel-flow
indicating system, if one of the
injector nozzles becomes restriced,
this would cause a decrease in fuel
flow with
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Definition
an increased fuel flow
indication on the gauge.
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Term
1. Powerplant instrument range
marking 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 Date Sheet.
Regarding the above statements,
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Definition
Both No. 1 and No. 2 are true.
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Term
The indication on a thermocouple-type
cylinder head temperature
indicator is produced by
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Definition
a current generated by the
temperature difference between
dissimilar metal hot and cold junctions.
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Term
Jet engine thermocouples
are usually constructed of
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Definition
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Term
Which statement is true regarding a thermocouple type cylinder head
temperature measuring system?
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Definition
The voltage output of
thermocouple system
is determined by the
temperature difference
between the two ends of
the thermocouple.
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Term
What unit in a tachometer system sends information to the indicator?
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Definition
The three phase ac generator.
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Term
In a turbine engine, where
is the turbine discharge
pressure indicator sensor located?
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Definition
Immediately aft of the last turbine stage.
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Term
Engine pressure ratio is the
total pressure ratio between the
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Definition
front of the compressor and
the rear of the turbine.
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Term
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?
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Definition
Turbine damage or loss
of turbine efficiency.
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Term
Where are the hot and
cold junctions located
in an engine cylinder
temperature indicating system?
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Definition
The hot junction is located
at the cylinder and the cold
junction is located at the
instrument.
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Term
An indication of unregulated power
change s that result in continual
drift of manifold pressure indication
on a turbosuper-charged aircraft
engine is know as?
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Definition
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Term
Which statement is correct
concerning a thermocouple
type temperature indicating
instrument system?
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Definition
It requires no external
power source.
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Term
Engine pressure ratio
is determined by
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Definition
dividing turbine outlet total
pressure by engine inlet total pressure.
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Term
A common type of
electrically operated
oil temperature gauge
utilizes
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Definition
either a wheatstone
bridge or ratiometer circuit.
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Term
Which unit most accurately
indicates fuel comsumption
of a reciprocating engine?
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Definition
Fuel flow meter
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Term
A manifold pressure
gauge is designed to
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Definition
indicate absolute pressue
in the intake manifold.
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Term
Basically, the indicator of a
tachometer system is
responsive to change in
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Definition
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Term
Why do helicopters
require a minimum of
two synchronous
tachometer systems?
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Definition
One indicates engine
RPM and other main rotor RPM.
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Term
Which of the following
is a primary
engine instrument?
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Definition
|
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Term
What instrument indicates
the thrust of a gas turbine engine?
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Definition
Engine pressure ratio indicator.
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Term
The engine pressure
ratio (EPR) indication of
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Definition
engine thrust being produced.
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Term
1. Gas turbine and reciprocating
engine oils can be mixed or used
interchangeably.
2. Most gas turbine engine oils
are synthetic.
Regarding the above statements,
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Definition
Only No. 2 is true.
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Term
What is the primary purpose
of the tachometer on an axial
compressor turbine engine?
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Definition
Monitor engine RPM during
starting and to indicate
overspeed conditions.
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Term
Engine oil temperature
gauges indicate the
temperature of the oil
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Definition
entering the engine.
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Term
A complete break in the
line between the manifold
pressure gauge and the
induction system will be
indicated by the gauge
registering
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Definition
prevailing atmospheric pressure.
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Term
High tooth pressures
and high rubbing velocities,
such as occur with spur type
gears, require the use of
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Definition
an EP lubricant.
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Term
The RPM indication of
a synchronous ac motor
tachometer is governed
by the generator
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Definition
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Term
The EGT gauge used
with reciprocating
engines is primarily
used to furnish
temperature readings
in order to
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Definition
obtain the best
mixture setting
for fuel efficiency.
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Term
Motor driven impeller
and turbine fuel flow
transmitters are
designed to transmit data
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Definition
using aircraft
electrical system power.
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Term
The fuel flow indication
data sent from motor
driven impeller and turbine,
and motorless type fuel flow
transmitters is a measure of
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Definition
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Term
Which of the following
instrument conditions is
acceptable and does NOT
require immediate correction?
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Definition
Case paint chipped. 5.
NOT 1. Red line missing.
4.Mounting screws loose.
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Term
In what units are turbine
engine tachometers calibrated?
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Definition
Precent of engine RPM.
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Term
Thermocouple leads
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Definition
are designed for a
specific installation
and may not be altered.
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Term
Which of the following types
of electric motors are commonly
used in electric tachometers?
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Definition
Sychronous motors.
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Term
The fuel flow indicator rotor
and needle for a motor impeller
and turbine indicating system
is driven by
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Definition
an electrical signal.
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Term
On a twin engine aircraft with fuel injected reciprocating
engines, one fuel flow indicator
reads considerably higher than
the other in all engine operating configurations. What is the
probable cause of the indication?
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Definition
One or more fuel
nozzles are clogged.
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Term
Instruments that measure
relatively high fluid pressures,
such as oil pressure gauges,
are usually what type?
2015 EIS
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Definition
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Term
The fuel flowmeter used
with a continuous-fuel
injection system installed
on an aircraft horizontally
opposed reciprocating engines
measures the fuel pressure
drop across the
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Definition
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Term
The exhaust gas temperature
(EGT) indicator on a gas
turbine engine provides
a relative indication of the
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Definition
turbine inlet temperature.
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Term
The principal fault in the
pressure type fuel flowmeter
indicating system, installed
on a horizontally opposed
continuous-flow fuel injected
aircraft reciprocating engine,
is that a plugged fuel injection
nozzle will cause a
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Definition
higher than normal
fuel flow indication.
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Term
The purpose of an exhaust
gas analyzer is to indicate the
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Definition
fuel/air ratio being
burned in the cylinders.
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Term
On an aircraft turbine engine,
operating at a constant power,
the application of engine
anti-icing will result in
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Definition
noticeable shift in EPR.
EPR=THRUST produced.
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Term
What basic meter is used
to indicate cylinder head
temperature in most aircraft?
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Definition
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|
Term
In regard to using a turbine
engine oil analysis program,
which of the following is NOT true?
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Definition
Generally, an accurate trend
forecast may be made after an
engine’s first oil sample analysis.
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Term
A bourdon tube instrument
may be used to indicate
1 & 2 Pressure and temperature
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Definition
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Term
1. Engine pressure ratio (EPR) is
a ratio of the exhaust gas pressure
to the engine inlet air pressure, and
indicates the “THRUST” produced.
2. Engine pressure ratio (EPR) is a ratio of the
exhaust gas pressure to the engine inlet air
pressure, and indicates the
volumetric produced.
Regarding the above statements,
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Definition
Only No. 1 is true
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