A&P - Powerplant Oral (Jeppesen) Questions with
Complete Solutions 100% Correct
Terms in this set (276)
Are the connecting rods No. Radial engines use master and articulating rod
used in each cylinder of a assemblies.
radial engine the same?
Explain.
At what speed does a gas At or near its rated speed regardless of electrical or
turbine APU operate and pneumatic loads imposed. The APU fuel control
how is this speed automatically adjusts the fuel flow to maintain the
maintained? rated speed.
Between field and Generally, both field and armature receive current for
armature windings in operation in the start mode.
starter-generators, which
ordinarily receive current
for operation in the start
mode?
Can the EGT system on a Yes, by checking the resistance of the thermocouples
turbine engine be and circuits.
checked without running
the engine?
A cold cylinder is found No combustion in that cylinder.
when troubleshooting a
running engine. What does
this indicate?
, A Kidde system has a sensing element consisting of a
sealed Inconel tube containing two conductors that
are embedded in a thermistor material. One wire is
electrically grounded to the outer tube at each end
and acts as an internal ground, and the other is a
positive lead. When a fire or overheat occurs, the
resistance of the thermistor material drops, allowing
current to flow between the two wires to activate an
Describe how a Kidde and
alarm. A Fenwal system uses a sensing element
Fenwal continuous loop
consisting of a small diameter flexible Inconel tube
fire protection system
containing a single wire electrode surrounded by
functions.
ceramic beads. These ceramic beads prevent the
electrode and tube from touching each other. Current
is applied to the electrode while the outer tube is
grounded to the aircraft structure. When a fire or
overheat occurs, the core resistance of the ceramic
beads drops, allowing current to flow between the
center electrode and ground, energizing the alarm
system.
During engine operation, Low pitch, high r.p.m.
where should the
propeller control be set
when checking the
manifold pressure?
Explain the main A turbofan engine uses a fan to bypass some air
difference and advantage around the engine core and to provide thrust. The
a turbofan over turbojet advantage is that this provides additional thrust
engines. without increasing fuel flow.
How and at what point An (engine-driven) impeller compresses the fuel/air
does an internally driven mixture after it leaves the carburetor.
supercharger boost air
pressure?
How are fire extinguishing Through perforated tubing and/or discharge nozzles.
agents distributed?
Complete Solutions 100% Correct
Terms in this set (276)
Are the connecting rods No. Radial engines use master and articulating rod
used in each cylinder of a assemblies.
radial engine the same?
Explain.
At what speed does a gas At or near its rated speed regardless of electrical or
turbine APU operate and pneumatic loads imposed. The APU fuel control
how is this speed automatically adjusts the fuel flow to maintain the
maintained? rated speed.
Between field and Generally, both field and armature receive current for
armature windings in operation in the start mode.
starter-generators, which
ordinarily receive current
for operation in the start
mode?
Can the EGT system on a Yes, by checking the resistance of the thermocouples
turbine engine be and circuits.
checked without running
the engine?
A cold cylinder is found No combustion in that cylinder.
when troubleshooting a
running engine. What does
this indicate?
, A Kidde system has a sensing element consisting of a
sealed Inconel tube containing two conductors that
are embedded in a thermistor material. One wire is
electrically grounded to the outer tube at each end
and acts as an internal ground, and the other is a
positive lead. When a fire or overheat occurs, the
resistance of the thermistor material drops, allowing
current to flow between the two wires to activate an
Describe how a Kidde and
alarm. A Fenwal system uses a sensing element
Fenwal continuous loop
consisting of a small diameter flexible Inconel tube
fire protection system
containing a single wire electrode surrounded by
functions.
ceramic beads. These ceramic beads prevent the
electrode and tube from touching each other. Current
is applied to the electrode while the outer tube is
grounded to the aircraft structure. When a fire or
overheat occurs, the core resistance of the ceramic
beads drops, allowing current to flow between the
center electrode and ground, energizing the alarm
system.
During engine operation, Low pitch, high r.p.m.
where should the
propeller control be set
when checking the
manifold pressure?
Explain the main A turbofan engine uses a fan to bypass some air
difference and advantage around the engine core and to provide thrust. The
a turbofan over turbojet advantage is that this provides additional thrust
engines. without increasing fuel flow.
How and at what point An (engine-driven) impeller compresses the fuel/air
does an internally driven mixture after it leaves the carburetor.
supercharger boost air
pressure?
How are fire extinguishing Through perforated tubing and/or discharge nozzles.
agents distributed?
