302 Deviation in a magnetic compass is caused by the:
O magnetic fields within the aircraft distorting the lines of magnetic force
O presence of flaws in the permanent magnets of the compass
O difference in the location between true north and magnetic north
O strong thunderstorms
303 If the outside air temperature (OAT) at a given altitude is warmer than standard, the density altitude is:
O higher than pressure altitude
O equal to pressure altitude
O lower than pressure altitude
O always the same regardless the temperature
304 What are the standard temperature and pressure values for sea level?
O 15° C and 29.92. Hg
O 59° C and 1013.2 millibars
O 59° F and 29.92 millibars
O 15° C and 1013. Hg
305 If a pilot changes the altimeter setting from 1010 to 1005 hPa, what is the approximate change in indication?
O Altimeter will indicate 150 feet lower
O Altimeter will indicate 0.15// Hg higher
O Altimeter will indicate 150 feet higher
O Altimeter will indicate 15 feet higher
306 If a flight is made from an area of high pressure into an area of lower pressure without the altimeter setting being adjusted, the altimeter will indicate:
O higher than the actual altitude above mean sea level
O lower than the actual altitude above mean sea level
O the actual altitude above mean sea level
O 1013.2 hpa
307 What is the only force stroke in a piston engine?
O Power.
O Induction.
O Compression.
O Exhaust.
308 The four stroke working cycle is…………………….?
O Induction, compression, power, exhaust.
O Power, induction, compression, exhaust.
O Compression, induction, power exhaust.
O Exhaust, induction, compression, power.
309 Compression ratio is?
O Total volume / clearance volume.
O Total volume / swept volume.
O Swept volume / total volume.
O Swept volume / clearance volume.
310 When climbing en-route with a normally aspirated engine at constant throttle setting and full rich mixture…………………………..?
O Cylinder head temperature decreases.
O Power increases due to less dense air.
O Power remains constant due to improved volume efficiency.
O Cylinder head temperature increases.
311 To switch off a magneto.
O The secondary circuit is earthed.
O The primary circuit is earthed.
O The primary coil is open circuit.
O The switch of a dual use is essential.
312 A cylinder head temperature gauge measures the temperature of the………………………?
O hottest cylinder.
O first cylinder.
O turbine.
O the exhaust gasses.
313 If engine oil pressure is slightly high when starting on a very cold day?
O It is normal provided it decreases as oil temperature increases.
O Shut down immediately, oil leak is suspected.
O Immediately shut the engine down and re-start carefully.
O The oil needs to be changed soon.
314 The chemically correct mixture for a piston engine is?
O 15 gr of air to 1 gr of fuel.
O 15 cc of air to 1 cc of fuel.
O 30 ml of fuel to 2 ml of air.
O 15 Kg of fuel to 1 Kg of air.
315 The aircraft fuelling point for AVGAS 100LL is coloured: -
O Red.
O Blue,
O Black on white,
O White on red.
316 The primary detection instruments for carburettor icing on an aircraft fitted with a fixed pitch propeller are:-
O The airspeed indicator and rpm gauge,
O The rpm gauge and cylinder head temperature gauge.
O The manifold pressure gauge and the rpm gauge,
O The air speed indicator, rpm gauge and CHT gauge.
317 On an aircraft equipped with a fixed pitch propeller, in flight, the onset of carburettor icing will first be indicated by:-
O A slight drop in rpm.
O A drop in manifold pressure.
O A rapid reduction in cylinder head temperature.
O An increase in cylinder head temperature.
318 In a piston engine the power lever is moved using indications on the.......gauge, and the RPM lever is moved using indications on the.......................................gauge?
O MAP, RPM.
O Fuel flow, power.
O Fuel flow, MAP.
O Torque, RPM.
319 The safest way to increase power on a piston engine driving a constant speed propeller is to?
O Increase mixture, then RPM, then MAP.
O Increase MAP, then RPM, then mixture.
O Carb-heat off, then MAP, then RPM.
O Magnetos off, then RPM then MAP.
320 Total volume of a multi-cylinder piston engine is equal to?
O Compression ratio x clearance volume x number of cylinders.
O Piston area x sroke x number of cylinders.
O Piston vplume x stroke : number of pistons.
O Swept volume minus total volume : number of cylinders.
321 What part of a piston engine converts vertical motion into rotary motion?
O Crankshaft.
O Camshaft.
O Cone rods.
O Pistons.
322 If the earth line to a magneto breaks in flight?
O The engine cannot be stopped using the ignition switches.
O The engine will stop.
O When the engine will stop, never will re-start again.
O The engine will continue, since multiple point, earth exists via the a/c chassis.
323 The fuel/air mixture ratio is?
O The mass of mixture in the cylinders.
O The volume of mixture in the cylinders.
O A small fracture of mixture in the carburettor.
O The volume of mixture in the manifold air intake.
324 A magneto?
O Generates AC power.
O Provides access to voltage regulation.
O Is driven from electronic ignition module.
O Generates DC power.
325 Fuel octane rating is a measure of?
O Its resistance to detonation.
O Its Vapour pressure.
O Its explosion energy.
O Its resistance to accidental pre-ignition.
326 The relationship between compression ratio and octane rating is?
O Increase increase.
O Increase decrease.
O Decrease unaffected.
O All relations are false.
327 (Fig.17) A CHT gauge measures?
O The hottest cylinder.
O The exhaust manifold temperature.
O The front pair of the opposed directed cylinders.
O The mean temperature of all the cylinders.
328 (Fig.16) An EGT gauge measures?
O The temperature inside the exhaust manifold.
O The coolest cylinder.
329 A rich mixture is indicated by?
O Black smoke and orange flames.
O Grey smoke and red flames.
O Light smoke and no flames.
O Black smoke and blue flames.
330 High oil pressure after start up is?
O Not a problem but the engine should not be accelerated until it returns to normal.
O Not a problem provided it can be reduced by increasing RPM to maximum.
O Probably caused by blocked oil filters and the engine should be shut down immediately.
O Probably caused by dirty oil. The engine should be shut down and restasrted provided the oil has been replaced.
331 Carburettor icing is most likely to occur in the………………………………..?
O choke tube at low power.
O movable links of carb.
O air inlet.
O jets.
332 Spark plug fouling?
O Is a build up of carbon deposits and is most likely during low power descents or idling.
O Is a build up of lead deposits and is most likely during low power descents or idling.
O Is a build up of dust burned deposits and is most likely during high power operations.
O Is a build up of dust burned deposits and is most likely when the mixture is lean and the engine hot.
333 In a normally aspirated engine climbing at constant RPM the MAP will?
O Decrease.
O Remain constant.
O It depends upon governor operation.
O It depends upon propeller type.
334 The spark occurs?
O When the contact breaker just opens.
O When the distributor of-centre rotor comes close enough to the spark plug points.
O When the contact breaker just closes.
O When the capacitor discharges.
335 AVGAS 100LL is coloured…………………………………and has……………………………….resistance to detonation than AVGAS 100L.
O blue, the same.
O blue, greater.
O green, greater.
O blue, less.
336 Selection of carburettor heat on an engine with no icing will?
O Increase CHT, but decrease RPM and power output.
O CHT, RPM and power output, increase or decrease in a random manner.
O Decrease CHT, RPM and power output.
O Increase CHT and RPM but decrease power output
337 The fuel mixture in a piston engine when running at maximum power is?
O Fully rich
O Fully leaned.
O Light rich.
O Depends upon fuel flow.
338 AVTUR Jet A1:
O Is coloured clear to light straw.
O Is coloured blue.
O Is always opaque.
O Is coloured purple (violet).
339 A rectractable main undercarriage unit is locked down by……………………?
O a mechanical lock and a spring loaded over-centre lock.
O hydraulic only pressure.
O torque links.
O a hydraulic lock and mechanical lock.
340 Octane rating of the fuel required by a piston engine?
O Is constant.
O Increases with compression ratio.
O Decreases with Reid Vapour Pressure.(RVP)
O Increases with power setting.
341 Which of the following statements is not false, of 100 LL AVGAS?
O It has a greater detonation resistance than 87 octane AVGAS.
O It contains more octane than 87 octane AVGAS.
O It contains more lead than 87 octane AVGAS.
O It cannot be used in normally aspirated engines.
342 How many times will each valve open and close during one complete cycle of a four-stroke internal combustion piston engine?
O once.
O twice.
O three times.
O four times.
343 (Fig.17) CHT is normally measured by?
O A thermocouple on the hottest cylinder head.
O A temperature sensor in the air inlet port.
O A thermocouple on the coolest cylinder head.
O A thermocouple on each cylinder head.
344 After starting a cold engine, if the oil pressure gauge does not indicate within approximately 30 seconds:
O the engine must be stopped immediately.
O the engine RPM should be increased and the oil pressure re-checked.
O this may be ignored if the oil temperature is still low and the oil level was checked before start-up.
O refer to the Pilot's Operating Handbook (POH) for the appropriate action.
345 Valve overlap?
O Occurs between exhaust and induction strokes.
O Is a sign of worn vale seats.
O Occurs between power and induction strokes.
O Occurs between compression and induction strokes.
346 If the starter warning light remains on after the starter switch has been released:
O the engine must be stopped.
O the alternator voltage output should be checked.
O the engine RPM should be increased, as it is too low for the voltage regulator to disconnect battery, from the bus bar.
O do not worry about, it will auto cut-off soon or later.
347 What is the function of an idle cut off valve in a piston engined aeroplane?
O It inhibits fuel flow from the discharge nozzle in the carburettor when selected.
O It controls engine slow-running via the carburettor idle jet.
O Changes fuel flow to the main jet.
O It shuts down the engine automatically if the cylinder head temperature rises due to long periods at idle on the ground before fouling the spark plugs.
348 What is the most common reason for increasing the number of blades on a propeller?
O Increase power absorption capability.
O Increase aerodynamic efficiency.
O Reduce propeller noise.
O Increase the airspeed.
349 Which of the following will increase the gyroscopic precession effect of a propeller?
O Increased RPM.
O Lower Manifold Pressure.
O Decreased airspeed.
O More pitch-up
350 What would be the result of propeller slipstream effect when taking-off using a single right handed tractor propeller?
O Yaw to the left.
O Adverse yaw.
O Greater on both wheels pressure.
O Yaw to the right
351 Which of the following conditions will occur when a propeller is feathered?
O Minimum aerodynamic drag on the propeller.
O Possibility of fire.
O The higher degree of mechanical stress.
O Lowest blade angle.
