Valve lag is the
inlet valve closing after the BDC of the induction stroke
inlet valve closing after TDC of the exhaust stroke
exhaust valve closing after the TDC of the exhaust stroke
exhaust valve closing after the BDC of the induction stroke
Spark plug fouling can be prevented by
Avoiding operating the engine at low RPM for long periods
Applying short bursts of power whilst taxiing
Maintaining engine RPM within the red arc on the tachometer
Operating the engine at low RPM occasionally
Which of the following best describes a wet sump oil system?
A portion of the oil is stored in the sump and is topped up from the oil tank
Used oil is collected in the sump and returned to the oil tank
All the oil is contained within the engine
No oil is needed for lubrication in this system
Airflow through a venturi, such as a carburettor, causes
increasing pressure and decreasing velocity at the throat
increasing velocity and decreasing pressure at the throat
increasing velocity and increasing pressure at the throat
increasing velocity and increasing pressure at the outlet
A bourdon tube change it's what when the pressure within changes?
Temperature
Density
Length
Curvature
Detonation could result from
A higher grade of fuel than recommended
Too low a manifold pressure
Too weak a mixture
Too rich a mixture
When a fuel priming pump is used, the fuel is normally delivered into the -
Induction manifold or inlet valve port
Booster pump
Carburettor float chamber
Combustion chamber
If a fuse blows in flight it
should not be replaced until after landing
may be replaced in the air once, with a fuse of the same value
may be replaced with a fuse of a higher value to prevent blowing again
may be replaced in the air once, with a fuse of a lower value
In the event of an alternator failure in flight the
Electrical load should be reduced and the flight continued
Electrical load should be reduced and a landing made at the nearest suitable airfield
Master switch should be turned off and the flight continued without electrics
Flight may be continued because the battery will supply the electricity
In a diesel engine, ignition occurs through
A spark plug
A fuse wire
Compression
An open flame
The yellow arc on the airspeed indicator represents the
Caution range
Flap operating range
Normal operating range
Never exceed range
In flight is is observed that the vacuum gauge reads zero, however the vacuum driven instruments appear to be functioning normally. This implies that -
The vacuum gauge has failed
Nothing is wrong
The air filter is blocked
The vacuum pump has failed
The apparent drift of a direction indicator is caused by -
Mechanical wear in the instrument
Movement of the gyroscope spin axis
Slowing of the gyroscope rotor
Rotation of Earth
When referenced to the stall of a clean airfoil, extended trailing edge flaps will give
A higher geometric stalling angle of attack
A higher stalling speed
The same stalling angle of attack
A lower geometric stalling angle of attack
What happens to the turn rate and radius in a level turn if airspeed is increased?
Rate increases, radius decreases
Both increase
Rate decreases, radius increases
Both decrease
An increase in airspeed, for a constant angle of attack causes
Decreased lift and increased profile drag
No change in lift but increased profile drag
Increased lift and no change in profile drag
Increased lift and increased profile drag
An aircraft is said to be in equilibrium when
Weight equals drag and lift equals trust
Weight equals lift and drag equals thrust
Lift equals weight and drag equals power
Lift equals drag and thrust equals weight
At high speed control surfaces may be prone to flutter, this is avoided by
Fitting mass balances forward of the hinge line
Using an anti-balance tab
Using a trim tab
Using a horn balance
The coefficient of lift is at its maximum value at
The critical angle of attack
The IAS for minimum drag
Four degrees angle of attack
A negative angle of attack
The elevators control the aircraft in ________ about the ________ axis
Roll, longitudinal
Pitch, longitudinal
Pitch, lateral
Roll, lateral
As the airspeed of an aircraft in increased
Induced drag increases and parasite drag decreases
Induced drag decreases and parasite drag increases
Both induced drag and parasite drag increases
Both induced drag and parasite drag decreases
An aircraft with an aft CoG is
Stable in pitch
Harder to stall
Sensitive to pitch
Easy to recover from a spin
On take-off in an aircraft with a clock wise turning propellor (as viewed from the cockpit) the torque reaction causes
The tail to rise
Roll to the right
The nose to rise
Roll to the left
If the CG of an aircraft is at or near the forward limit, this will cause
Higher elevator forces during the flare just before touchdown
A reduction in basic stalling speed
A decrease in take off speed
Increased static stability damping
Rotational speed of the engine is measured by
Ratiometer
Tachometer
Spin gauge
Engine speed indicator
