This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
TECHGEN-BNC-MODULE9
1.
In a compensated capacitance type quantity indicating system, the contents gauge of a half-full fuel tank indicates a fuel mass of 8000 lb. If a temperature rise increased the volume of fuel by 5 %, the indicated fuel weight would:
a) increase by 5 %.
b) increase by 10 %.
c) remain the same.
d) decrease by 5 %.
2.
The application of carburettor heat reduces
a) the volume of air entering the carburettor, thus enriching the fuel/air mixture.
b) the volume of air entering the carburettor, thus leaning the fuel/air mixture
c) the density of air entering the carburettor, thus enriching the fuel/air mixture
d) it reduces the density of air entering the carburettor, thus leaning the fuel/air mixture
3.
An impulse magneto coupling
a) reduces magneto speed during engine warm-up
b) gives an automatic spark increase during high speed operation.
c) advances ignition timing and gives a hotter spark at starting
d) gives a retarded spark at starting
4.
Spark timing is related to engine speed in the way that the:
a) faster the engine functions, the more the spark is advanced
b) faster the engine functions, the more retarded the spark is.
c) slower the engine functions, the more the spark is advanced
d) faster the engine functions, the further past TDC the spark occurs
5.
Continuous loop fire detector systems operate on the principle that an increase in temperature produces:
a) a decrease in resistance
b) an increase in resistance
c) a decrease in the reference current
d) a decrease in pressure
6.
Under normal flight conditions, cabin pressure is controlled by:
a) engine rpm.
b) inward relief valve(s).
c) pressurisation duct relief valve(s).
d) regulating the discharge of air through the outflow valve(s).
7.
If an engine fails to stop with the magneto switch in OFF position, the cause may be:
a) fouled spark plugs
b) defective condenser
c) switch wire grounded
d) excessive carbon formation in cylinder head.
8.
Tyre "creep" may be described as the:
a) the decrease in inflation pressure due to increase in ambient temperature.
b) gradual circumferential increase of tyre wear.
c) circumferential movement of the tyre in relation to the wheel flange.
d) the increase in inflation pressure due to decrease in ambient temperature.
9.
The part of a piston engine that transforms reciprocating movement into rotary motion is termed the:
a) reduction gear
b) camshaft
c) crankshaft
d) piston
10.
On a 13653 a fire detection system includes:
a) a single warning light but a separate alarm bell for each engine
b) a single warning light and a single alarm bell
c) both a warning light and an alarm bell unique to each engine
d) a warning light for each engine and a single alarm bell common to all engines
11.
The use of too low an octane fuel may cause:
a) a prompt pre-ignition reaction.
b) detonation
c) higher manifold pressure
d) a cooling effect on cylinders
12.
An impulse coupling is installed on a magneto of a piston engine to:
a) absorb starting loads.
b) facilitate quick removal and installation.
c) provide a retarded spark for engine starting.
d) advance the ignition timing.
13.
With respect to a piston engine aircraft, ice in the carburettor:
a) will only form at outside air temperatures (OAT's) below the freezing point of water.
b) will only form at OAT's below the freezing point of fuel.
c) may form at OAT's higher than +10°C.
d) will only form at OAT's below +10°C.
14.
The term "Bootstrap", when used to identify a cabin air conditioning and pressurisation system, refers to the:
a) source of the charge air.
b) cold air unit (air cycle machine) arrangement.
c) charge air across the inter-cooler heat exchanger.
d) means by which pressurisation is controlled.
15.
The Ram Air Turbine (RAT) provides emergency hydraulic power for:
a) flight controls in the event of loss of engine driven hydraulic power.
b) nose wheel steering after the aeroplane has landed.
c) undercarriage selection and automatic brake system.
d) flap extension only.
16.
The oil system for a piston engine incorporates an oil cooler that is fitted:
a) in the return line to the oil tank after the oil has passed through the scavenge pump
b) between the oil tank and the pressure pump
c) after the oil has passed through the engine and before it enters the sump
d) after the pressure pump but before the oil passes through the engine
17.
Assuming a hydraulic accumulator is pre-charged with air to 1000 psi. If the hydraulic system is then pressurised to its operating pressure of 3000 psi, the indicated pressure on the air side of the accumulator should be:
a) 3000 psi.
b) 1000 psi.
c) 2000 psi.
d) 4000 psi.
18.
Assuming an accumulator is pre-charged with air to 1000 psi and the hydraulic system is pressurised to 1500 psi, the accumulator gauge will read:
a) 2500 psi.
b) 1000 psi.
c) 500 psi.
d) 1500 psi.
19.
On large aeroplanes equipped with power brakes, the main source of power is derived from:
a) the brake actuators.
b) the aeroplane's hydraulic system.
c) pressure to the rudder pedals.
d) the master cylinders.
20.
In a piston engine if the ratio of air to fuel, by weight, is approximately 9:1, the mixture is said to be:
a) too weak to support combustion
b) normal
c) weak
d) rich
21.
If the engine, with a fixed pitch propeller, is detonating during climb-out after takeoff, the normal corrective action would be to:
a) apply carburettor heat.
b) reduce the throttle
c) lean the mixture
d) increase the rate of climb
22.
An impulse coupling does not function at such speeds above those encountered in starting. Its engaging pawls are prevented from operating at higher speeds by
a) centrifugal force
b) engine oil pressure
c) electro-magnetic action of operating magneto.
d) a coil spring
23.
A modern Auxiliary Power Unit (APU) is designed to provide power for ground starting of an engine. It also supplies both in the air (subject to certification limitations) and on the ground:
a) air conditioning and thrust in the event of engine failure.
b) air conditioning and electrical services (on the ground) electrical and hydraulic back-up services (in the air).
c) air conditioning and electrical services.
d) either air conditioning or electrical services, but never both at the same time.
24.
When leaning the mixture for the most economic cruise fuel flow, excessive leaning will cause:
a) high engine rpm
b) low cylinder head and exhaust gas temperature
c) high manifold pressure
d) high cylinder head and exhaust gas temperature
25.
The term "pressure cabin" applies when an aeroplane:
a) is only pressurised in the area of the control cabin.
b) has the ability to maintain a constant cabin differential pressure at all flight altitudes.
c) has the ability to maintain a constant cabin altitude at all flight altitudes.
d) has the means to maintain cabin pressure higher than ambient pressure.
26.
Assuming cabin pressure decreases, the cabin rate of climb indicator should indicate:
a) zero.
b) a rate of descent of approximately 300 feet per minutes.
c) a rate of climb.
d) a rate of descent dependent upon the cabin differential pressure.
27.
At high altitudes, an excessively rich mixture will:
a) cause the engine to overheat.
b) cause the engine to operate smoother even though fuel consumption is increased
c) cause the fouling of spark plugs
d) increase the power available at that altitude
28.
In hydraulic system, a shuttle valve:
a) regulates pump delivery pressure.
b) allows two possible sources of pressure to operate one unit.
c) is a self-lapping non-return valve.
d) allows two units to be operated by one pressure source.
29.
To allow for failure of the normal method of system pressure limiting control, a hydraulic system often incorporates
a) an accumulator.
b) auxiliary hydraulic motors.
c) a stand-by hydraulic pump.
d) a high pressure relief valve.
30.
"Nose wheel shimmy" may be described as:
a) a possibly damaging vibration of the nose wheel when moving on the ground.
b) the amount of free movement of the nose wheel before steering takes effect.
c) the oscillatory movement of the nose wheel when extended prior to landing.
d) aircraft vibration caused by the nose wheel upon extension of the gear.
31.
Fire precautions to be observed before refuelling are:
a) Aircraft must be more than 10 metres from radar or HF radio equipment under test.
b) Ground Power Units (GPU) are not to be operated.
c) Passengers may be boarded (traversing the refuelling zone) providing suitable fire extinguishers are readily available.
d) All bonding and connections to the earth terminal between ground equipment and the aircraft should be made before filler caps are removed.
32.
Assuming cabin differential pressure has attained the required value in normal flight conditions, if flight altitude is maintained:
a) a constant mass air flow is permitted through the cabin.
b) the pressurisation system ceases to function until leakage reduces the pressure.
c) the pressurisation system must be controlled manually.
d) the outflow valves will move to the fully open position.
33.
To ensure that the fuel flow is kept directly proportional to the volume of air flowing through the choke, thus preventing the main jet supplying excessive fuel as engine speed is increased, a carburettor is fitted with:
a) a diffuser
b) a power jet
c) an accelerator pump
d) a mixture control
34.
The first indication of carburettor icing in airplanes equipped with constant speed propellers would most likely be a:
a) decrease in rpm
b) rough running engine followed by an increase in manifold pressure
c) rough running engine followed by loss in rpm.
d) decrease in manifold pressure
35.
Which one of the following factors would be most likely to increase the possibility of detonation occurring within a piston engine?
a) the use of a fuel with a high octane rating as compared to the use of one with a low octane rating
b) slightly retarding the ignition timing
c) using too lean a fuel/air mixture
d) using an engine with a low compression ratio
36.
A condenser in parallel with breaker points will
a) permit arcing across points
b) intensify current in secondary winding
c) assist in negative feedback to secondary coil
d) assist in collapse of secondary winding.
37.
Aircraft magneto`s receive electrical energy from
a) batteries
b) condensers
c) generators
d) rotating permanent magneto's.
38.
Discounting the possibility of a leak, the level in a hydraulic reservoir will:
a) fluctuate with jack displacement and accumulator pressure.
b) increase as ambient temperature decreases.
c) initially increase with system pressurisation.
d) always remain the same.
39.
Dual ignition provides a factor of safety and
a) aids in starting
b) improves combustion.
c) saves wear caused be using one magneto constantly
d) provides more voltage
40.
When starting an engine or when the engine runs at an idle rpm on ground, the mixture is:
a) rich, to make starting possible and to cool the engine sufficiently when idling
b) rich, because the choke valve is closed
c) lean, to prevent hat the engine consumes too much fuel.
d) rich, because carburettor heat is switched on
41.
As the flight altitude increases, if no leaning is made with the mixture control:
a) the density of air entering the carburettor decreases and the amount of fuel remains constant
b) the volume of air entering the carburettor remains constant and the amount of fuel decreases
c) the density of air entering the carburettor decreases and the amount of fuel increases.
d) the volume of air entering the carburettor decreases and the amount of fuel decreases
42.
If the ground wire between the magneto and the ignition switch becomes disconnected, the most noticeable result will be that the engine
a) will not operate at the right magneto
b) cannot be shut down by turning the switch to the OFF position.
c) will not operate at the left magneto
d) cannot be started with the switch in the ON position
43.
During flight at normal cruising speed, if one magneto failed completely, it would first cause:
a) excessive vibration
b) additional load on the other magneto
c) loss of approximately 100 rpm
d) engine to overheat.
44.
An accumulator in a hydraulic system will:
a) increase pressure surges within the system.
b) store fluid under pressure.
c) reduce fluid temperature and pressure.
d) reduce fluid temperature only.
45.
Internal leakage in a hydraulic system will cause:
a) an increased fluid pressure.
b) a decreased fluid temperature.
c) fluid loss.
d) an increased fluid temperature.
46.
In a bootstrap cooling system the supply air is first:
a) compressed, passed through a secondary heat exchanger, and then across an expansion turbine.
b) used to increase the cabin air supply pressure when the charge pressure is too low.
c) passed across an expansion turbine, then compressed and passed through a secondary heat exchanger.
d) passed across an expansion turbine, then directly to the heat exchanger.
47.
An aircraft magneto is switched off by
a) grounding the primary circuit
b) opening the secondary circuit
c) opening the primary circuit
d) grounding the secondary circuit.
48.
The cylinder head and oil temperature gauges are to exceed the normal operating ranges if a pilot
a) uses fuel that has a rating higher-than-specified for the engine
b) operating wit higher-than-normal oil pressure
c) operates with the mixture control set too rich.
d) uses fuel that has a rating lower-than-specified for the engine
This is more feedback!
This is the feedback!
Data Base Login Information: Please make
sure that you enter your name before
submitting your results.
My Name
*Enter your name here
Back to Top
