CSYH Practice Cards 2

Question 1

If an engine is flooded it may be started by …

Answer 1

setting the mixture to idle cut off, setting the throttle wide open, cranking the engine and re-setting mixture to rich after start

Question 2

After landing a piston engine helicopter you order AVGAS 100LL from the fuel supplier at the airport. When testing the fuel after refueling, you note that the colour of the fuel is green. The likely effect of operating the engine with this fuel is …

Answer 2

possible spark plug fouling

Question 3

If an engine running with the mixture leaned to peak EGT, is riched to over rich …

Answer 3

power will increase then decrease

Question 4

As the throttle is moved towards full throttle position …

Answer 4

manifold pressure increases and mass flow increases

Question 5

A rotor blade in a ridged rotor system has freedom to …

Answer 5

feather

Question 6

The effect of a blocked static vent during a climb would be …

Answer 6

an under reading ASI

Question 7

An unusually high cylinder head temperature in cruise could cause …

Answer 7

detonation or pre-ignition

Question 8

During descent after encountering icing, the ASI is found to under read by an increasing amount. This could …

Answer 8

be caused by an ice-blocked pitot tube

Question 9

If an engine begins to run roughly because of vaporisation of fuel during flight the pilot should …

Answer 9

operate the boost pump

Question 10

A direct reading magnetic compass is probably damaged if …

Answer 10

the liquid excessively discoloured

Question 11

An impulse magneto coupling …

Answer 11

retards ignition timing and gives a hotter spark at starting

Question 12

The most likely cause of icing in a float type carburettor is …

Answer 12

low to medium power operations on warm humid days

Question 13

Operating an engine at high power with the mixture very lean can cause …

Answer 13

backfiring and overheating

Question 14

A pressure altimeter with 1013 hpa set on subscale, reads the aircrafts vertical displacement from …

Answer 14

sea level in ISA

Question 15

When the inlet valve is closed after BDC in a 4-stroke engine, the maximum quantity of fuel/air change entering the cylinder is ensured. The modification to the valve timing is know as …

Answer 15

valve lag

Question 16

The best action to take at the onset of detonation in an engine is …

Answer 16

select mixture to full rich and decrease power

Question 17

The most likely cause of a fluctuating fuel pressure indicator is …

Answer 17

a fuel vapor lock in the fuel line

Question 18

An accumulator may be fitted to a hydraulic system to …

Answer 18

provide emergency pressure

Question 19

An inverter in an aircraft electrical system is used to convert …

Answer 19

DC to AC

Question 20

An external power socket on an aircraft is used to …

Answer 20

supply the aircraft with ground power prior to engine start

Question 21

The instrument which will read incorrectly in a descent if the pitot tube becomes blocked is …

Answer 21

the airspeed indicator

Question 22

Take-off power is …

Answer 22

used only for take-off, with a time limit of about 3-5 minutes

Question 23

The pressure exerted on a piston during the power stroke increases as the mass of charge induced …

Answer 23

increases and combustion temperature increases

Question 24

The volumetric efficiency of an engine depends upon …

Answer 24

throttle position, ambient temperature, ambient pressure and RPM

Question 25

A pilot should avoid prolonged operation of an electric started motor as this can cause …

Answer 25

overheating of the started motor

Question 26

If a left hand zero ammeter indicates zero during flight …

Answer 26

the alternator has failed

Question 27

Vaporisation of fuel would be most likely to occur, at high power settings …

Answer 27

with hot fuel and low atmospheric pressure

Question 28

The cyclic control on a helicopter …

Answer 28

alters the pitch on each blade consecutively and independently on the other blades (relative to the mast)

Question 29

The typical number of hydraulic servo actuators in a hydraulically powered rotor system is …

Answer 29

two servo actuators for cyclic control input and one servo actuator for collective control input

Question 30

In the southern hemisphere, when conducting a Rate 1 turn to the right from 090 degrees M heading to 270 degrees M heading, using the direct reading magnetic compass …

Answer 30

the turn should take 1 minute and the roll out heading on the compass should be approximately 250 degrees M

Question 31

It is advisable to check magnetos at pre flight to make sure both are operating and capable of being shut off. This check should be made …

Answer 31

during engine run-up, before take off

Question 32

For its operation, the VSI senses …

Answer 32

rate of change of static pressure

Question 33

A filter by pass circuit is included in some hydraulic systems to …

Answer 33

allow fluid to return to the reservoir if the filter becomes blocked

Question 34

If a left-hand-zero ammeter indicated an unusually high charge rate during flight …

Answer 34

the electrical system is overloaded

Question 35

A fully articulated rotor system has blades which have freedom to …

Answer 35

feather, flap and drag

Question 36

An aircrafts actual heading will be ahead of the compass indication when turning …

Answer 36

onto south in the southern hemisphere

Question 37

The most likely consequence of using too low grade of fuel in an aero-engine is …

Answer 37

detonation and power loss

Question 38

The purpose of a turbo charger is to …

Answer 38

increase the mass airflow to the engine

Question 39

A pressure altimeter with QNH set on subscale, reads the aircraft’s vertical displacement from …

Answer 39

mean sea level

Question 40

A potential danger of overheating an engine with the oil temperature above the upper limits is that …

Answer 40

lubrication of some parts may become inadequate