Quiz
PPL Technical Practice 4
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Questions in this quiz (25)
1Valve lag is the
- Ainlet valve closing after the BDC of the induction stroke
- Binlet valve closing after TDC of the exhaust stroke
- Cexhaust valve closing after the TDC of the exhaust stroke
- Dexhaust valve closing after the BDC of the induction stroke
2Spark plug fouling can be prevented by
- AAvoiding operating the engine at low RPM for long periods
- BApplying short bursts of power whilst taxiing
- CMaintaining engine RPM within the red arc on the tachometer
- DOperating the engine at low RPM occasionally
3Which of the following best describes a wet sump oil system?
- AA portion of the oil is stored in the sump and is topped up from the oil tank
- BUsed oil is collected in the sump and returned to the oil tank
- CAll the oil is contained within the engine
- DNo oil is needed for lubrication in this system
4Airflow through a venturi, such as a carburettor, causes
- Aincreasing pressure and decreasing velocity at the throat
- Bincreasing velocity and decreasing pressure at the throat
- Cincreasing velocity and increasing pressure at the throat
- Dincreasing velocity and increasing pressure at the outlet
5A bourdon tube change it's what when the pressure within changes?
- ATemperature
- BDensity
- CLength
- DCurvature
6Detonation could result from
- AA higher grade of fuel than recommended
- BToo low a manifold pressure
- CToo weak a mixture
- DToo rich a mixture
7When a fuel priming pump is used, the fuel is normally delivered into the -
- AInduction manifold or inlet valve port
- BBooster pump
- CCarburettor float chamber
- DCombustion chamber
8If a fuse blows in flight it
- Ashould not be replaced until after landing
- Bmay be replaced in the air once, with a fuse of the same value
- Cmay be replaced with a fuse of a higher value to prevent blowing again
- Dmay be replaced in the air once, with a fuse of a lower value
9In the event of an alternator failure in flight the
- AElectrical load should be reduced and the flight continued
- BElectrical load should be reduced and a landing made at the nearest suitable airfield
- CMaster switch should be turned off and the flight continued without electrics
- DFlight may be continued because the battery will supply the electricity
10In a diesel engine, ignition occurs through
- AA spark plug
- BA fuse wire
- CCompression
- DAn open flame
11The yellow arc on the airspeed indicator represents the
- ACaution range
- BFlap operating range
- CNormal operating range
- DNever exceed range
12In flight is is observed that the vacuum gauge reads zero, however the vacuum driven instruments appear to be functioning normally. This implies that -
- AThe vacuum gauge has failed
- BNothing is wrong
- CThe air filter is blocked
- DThe vacuum pump has failed
13The apparent drift of a direction indicator is caused by -
- AMechanical wear in the instrument
- BMovement of the gyroscope spin axis
- CSlowing of the gyroscope rotor
- DRotation of Earth
14When referenced to the stall of a clean airfoil, extended trailing edge flaps will give
- AA higher geometric stalling angle of attack
- BA higher stalling speed
- CThe same stalling angle of attack
- DA lower geometric stalling angle of attack
15What happens to the turn rate and radius in a level turn if airspeed is increased?
- ARate increases, radius decreases
- BBoth increase
- CRate decreases, radius increases
- DBoth decrease
16An increase in airspeed, for a constant angle of attack causes
- ADecreased lift and increased profile drag
- BNo change in lift but increased profile drag
- CIncreased lift and no change in profile drag
- DIncreased lift and increased profile drag
17An aircraft is said to be in equilibrium when
- AWeight equals drag and lift equals trust
- BWeight equals lift and drag equals thrust
- CLift equals weight and drag equals power
- DLift equals drag and thrust equals weight
18At high speed control surfaces may be prone to flutter, this is avoided by
- AFitting mass balances forward of the hinge line
- BUsing an anti-balance tab
- CUsing a trim tab
- DUsing a horn balance
19The coefficient of lift is at its maximum value at
- AThe critical angle of attack
- BThe IAS for minimum drag
- CFour degrees angle of attack
- DA negative angle of attack
20The elevators control the aircraft in ________ about the ________ axis
- ARoll, longitudinal
- BPitch, longitudinal
- CPitch, lateral
- DRoll, lateral
21As the airspeed of an aircraft in increased
- AInduced drag increases and parasite drag decreases
- BInduced drag decreases and parasite drag increases
- CBoth induced drag and parasite drag increases
- DBoth induced drag and parasite drag decreases
22An aircraft with an aft CoG is
- AStable in pitch
- BHarder to stall
- CSensitive to pitch
- DEasy to recover from a spin
23On take-off in an aircraft with a clock wise turning propellor (as viewed from the cockpit) the torque reaction causes
- AThe tail to rise
- BRoll to the right
- CThe nose to rise
- DRoll to the left
24If the CG of an aircraft is at or near the forward limit, this will cause
- AHigher elevator forces during the flare just before touchdown
- BA reduction in basic stalling speed
- CA decrease in take off speed
- DIncreased static stability damping
25Rotational speed of the engine is measured by
- ARatiometer
- BTachometer
- CSpin gauge
- DEngine speed indicator
Information
- Description
- Aviation Quiz on PPL Technical Practice 4, created by kiwi_cam on 02/04/2015.
- Author
- kiwi_cam
- Language
- English
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- 42
- History
- Created on 2 Apr 2015 · updated on 19 Feb 2016
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