Powerplant ASA Exam Questions with Correct Answers 100% Verified By Experts| Latest
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In what position should the crankshaft be when a magneto is being timed to the engine?
Piston in cylinder 1 should be in correct position for ignition to occur usually right before
TDC on compression stroke.
What is checked on engine runup to determine the operational condition of engine. Idling
RPM & manifold pressure, engine acceleration, max static RPM and manifold pressure,
magneto drop, propeller pitch change, propeller feathering, oil, fuel pressure.
What adjustments and rigging are accomplished on a turbine engine? Adjustment of power
control levers/cables, followed by adjustment of the fuel control unit to trim the engine for
correct idle speed and maximum thrust
What kind of indicator mechanism is used to measure oil pressure? Bourdon tube
What kind of indicator mechanism is used to measure manifold pressure? A differential
bellows
What should a manifold pressure gauge read when the engine is not operating? The existing
barometric pressure
What type of fitting is used to connect an oil pressure gauge to the engine? fitting with a
restrictor that smoothes out pulsations & prevents serious loss of oil when indicator line is
broken.
What is used to fill the line between a fuel pressure gauge and the fuel metering system?
Light oil such as kerosene
What could cause a fuel pressure gauge to fluctuate? Loss of the light oil between fuel
pressure gauge and fuel metering system
, What is the range of. pressure needed for a fuel pressure gauge used with a float carburetor?
Normally 1 to 25 psi
What is an EICAS (engine indicating and crew alerting system)? Electronic instrumentation
system that monitors airframe & engine parameters and displays essential information on a
panel. Alerts crew when parameters are outside of range.
What is straight mineral oil? Lubricating oil that does not contain any additives
What is ashes dispersant oil? Mineral oil with additives that disperse contaminants in the oil
so it will not clump & clog passages. Non ash-forming additives.
What is synthetic oil? lubricating oil that has been chemically altered to achieve needed
characteristics. Primary oil for turbine engine.
Is automotive oil suitable for aircraft engines? NO different operating conditions
What is meant by a multi viscosity oil? type of lubricating oil that increases viscosity when
hot and decreases viscosity when cold
Where can you find the grade of engine oil specified for a particular aircraft? Airplane flight
manual or Pilot operating handbook
Six functions of oil in an aircraft engine Reduces friction, Seals and cushions, removes heat,
cleans, protects against corrosion, hydraulic action
What is the purpose of an air oil separator or deaerator in a turbine engine oil tank? oil and
air is separated my swirling oil, air is used to pressurized tank
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In what position should the crankshaft be when a magneto is being timed to the engine?
Piston in cylinder 1 should be in correct position for ignition to occur usually right before
TDC on compression stroke.
What is checked on engine runup to determine the operational condition of engine. Idling
RPM & manifold pressure, engine acceleration, max static RPM and manifold pressure,
magneto drop, propeller pitch change, propeller feathering, oil, fuel pressure.
What adjustments and rigging are accomplished on a turbine engine? Adjustment of power
control levers/cables, followed by adjustment of the fuel control unit to trim the engine for
correct idle speed and maximum thrust
What kind of indicator mechanism is used to measure oil pressure? Bourdon tube
What kind of indicator mechanism is used to measure manifold pressure? A differential
bellows
What should a manifold pressure gauge read when the engine is not operating? The existing
barometric pressure
What type of fitting is used to connect an oil pressure gauge to the engine? fitting with a
restrictor that smoothes out pulsations & prevents serious loss of oil when indicator line is
broken.
What is used to fill the line between a fuel pressure gauge and the fuel metering system?
Light oil such as kerosene
What could cause a fuel pressure gauge to fluctuate? Loss of the light oil between fuel
pressure gauge and fuel metering system
, What is the range of. pressure needed for a fuel pressure gauge used with a float carburetor?
Normally 1 to 25 psi
What is an EICAS (engine indicating and crew alerting system)? Electronic instrumentation
system that monitors airframe & engine parameters and displays essential information on a
panel. Alerts crew when parameters are outside of range.
What is straight mineral oil? Lubricating oil that does not contain any additives
What is ashes dispersant oil? Mineral oil with additives that disperse contaminants in the oil
so it will not clump & clog passages. Non ash-forming additives.
What is synthetic oil? lubricating oil that has been chemically altered to achieve needed
characteristics. Primary oil for turbine engine.
Is automotive oil suitable for aircraft engines? NO different operating conditions
What is meant by a multi viscosity oil? type of lubricating oil that increases viscosity when
hot and decreases viscosity when cold
Where can you find the grade of engine oil specified for a particular aircraft? Airplane flight
manual or Pilot operating handbook
Six functions of oil in an aircraft engine Reduces friction, Seals and cushions, removes heat,
cleans, protects against corrosion, hydraulic action
What is the purpose of an air oil separator or deaerator in a turbine engine oil tank? oil and
air is separated my swirling oil, air is used to pressurized tank
