AVIA 340 ALL SET QUESTIONS AND ANSWERS
SET A+
✔✔What rotates faster, an N1 shaft or an N2 shaft in a turbine engine?
N1 shaft
N2 shaft - ✔✔N2 shaft
✔✔Imagine that you are on climb out: what is worse, an engine (compressor) stall or an
engine surge?
Stall
Surge - ✔✔Surge
✔✔What is the fundamental principle behind the operation of a gas turbine engine?
Newton's third law of motion
Conservation of energy
The law of diminishing returns
Bernoulli's principle - ✔✔Newton's third law of motion
✔✔What is the primary difference between a turbojet engine and a turbofan engine?
The number of stages in the turbine
The type of fuel used
The direction of airflow through the engine.
The presence of a fan to bypass air around the core engine. - ✔✔The presence of a fan
to bypass air around the core engine.
✔✔Turbine blades are driven by
exhaust gases
four stroke reciprocating gases
compressor gases - ✔✔exhaust gases
✔✔Dual-compressor engines deliver lower compression ratios than single-compressor
engines.
True
, False - ✔✔False
✔✔The generator in an airplane electrical system corresponds to the _______ in the
reference waterwheel system found in the textbook.
Water
Diode
Pump
Reservoir - ✔✔Pump
✔✔Most modern aircraft are electrically powered by __________ generators.
AC
Hydraulic
DC
BC - ✔✔AC
✔✔An ampere is the unit used to measure electric current
True
False - ✔✔True
✔✔The purpose of the constant speed drive unit is to create an integrated drive
generator connected to constant speed drive unit (CSD) which is a gearbox for the
electrical system.
True
False - ✔✔True
✔✔The battery is best thought of as the ______________ in the water reference
system.
Gizmo
Reservoir
Waterwheel
Pump - ✔✔Reservoir
✔✔What is the main function of the generator in an aircraft's electrical power system?
To convert AC to DC power.
To store electrical energy for backup.
To pressurize the electrical system.
To provide current to power devices and maintain a constant voltage. - ✔✔To provide
current to power devices and maintain a constant voltage.
✔✔Why must the generator voltage overcome battery voltage in an aircraft electrical
system?
to drain the battery
to charge the battery
to equalize voltages
SET A+
✔✔What rotates faster, an N1 shaft or an N2 shaft in a turbine engine?
N1 shaft
N2 shaft - ✔✔N2 shaft
✔✔Imagine that you are on climb out: what is worse, an engine (compressor) stall or an
engine surge?
Stall
Surge - ✔✔Surge
✔✔What is the fundamental principle behind the operation of a gas turbine engine?
Newton's third law of motion
Conservation of energy
The law of diminishing returns
Bernoulli's principle - ✔✔Newton's third law of motion
✔✔What is the primary difference between a turbojet engine and a turbofan engine?
The number of stages in the turbine
The type of fuel used
The direction of airflow through the engine.
The presence of a fan to bypass air around the core engine. - ✔✔The presence of a fan
to bypass air around the core engine.
✔✔Turbine blades are driven by
exhaust gases
four stroke reciprocating gases
compressor gases - ✔✔exhaust gases
✔✔Dual-compressor engines deliver lower compression ratios than single-compressor
engines.
True
, False - ✔✔False
✔✔The generator in an airplane electrical system corresponds to the _______ in the
reference waterwheel system found in the textbook.
Water
Diode
Pump
Reservoir - ✔✔Pump
✔✔Most modern aircraft are electrically powered by __________ generators.
AC
Hydraulic
DC
BC - ✔✔AC
✔✔An ampere is the unit used to measure electric current
True
False - ✔✔True
✔✔The purpose of the constant speed drive unit is to create an integrated drive
generator connected to constant speed drive unit (CSD) which is a gearbox for the
electrical system.
True
False - ✔✔True
✔✔The battery is best thought of as the ______________ in the water reference
system.
Gizmo
Reservoir
Waterwheel
Pump - ✔✔Reservoir
✔✔What is the main function of the generator in an aircraft's electrical power system?
To convert AC to DC power.
To store electrical energy for backup.
To pressurize the electrical system.
To provide current to power devices and maintain a constant voltage. - ✔✔To provide
current to power devices and maintain a constant voltage.
✔✔Why must the generator voltage overcome battery voltage in an aircraft electrical
system?
to drain the battery
to charge the battery
to equalize voltages
