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WorksheetsEC135 Week 3
Total questions: 120
Worksheet time: 3hrs 0mins
Name
Class
Date
1.
Arrius 2B engine technical publications are available through:
a)
Keycopter
b)
Aviall
c)
TOOLS
2.
Arrius 2B technical documentation is compiled in accordance with:
a)
ESTA 100
b)
ATA 100
c)
IETP 100
3.
Arrius 2B deep maintenance is considered to be __________ maintenance
a)
level 1
b)
level 2
c)
level 3
4.
Arrius 2B EMM describes _______________ maintenance
a)
level 1
b)
level 1 and level 2
c)
all levels of
5.
The Arrius 2B PMA is driven by _____________
a)
N1 geartrain
b)
N2 geartrain
c)
reduction geartrain
6.
The Arrius 2B PMA supplied electrical power is _______________
a)
direct curent
b)
alternating current
c)
- - -
7.
In case of failure of 28VDC busbar supplying power to the Arrius 2B EECU ____________
a)
the engine cannot be started at all
b)
the engine can be started
c)
the engine will stop in-flight
8.
The Arrius 2B electrical harness consists of ____________ separate harnesses
a)
4
b)
3
c)
2
9.
Each EC135 engine is equipped with ______________ fire detectors
a)
4
b)
3
c)
2
10.
The EC135's engine fire extinguisher system contains ___________________
a)
two fire extinguisher bottles, one for each engine
b)
one fire extinguisher bottle split into two tanks, one for each engine
c)
one fire extinguisher bottle serving both engines
11.
When the Fire extinguishing function is activated, the HALON extinguishing agent is released:
a)
to both engines simultaneously and immediately
b)
to both engines simultaneously affter engines N1 speed drops below 50%
c)
to the affected engine after the affected engine's N1 speed drops below 50%
12.
The affected engine N1 speed must drop below ________ in order for the fire extinguisher system to expell extinguishing agent to the affected engine
a)
75 percent
b)
50 percent
c)
60 percent
13.
How many fuel bladder cells form the EC135's fuel storage system?
a)
3
b)
2
c)
1
14.
How many fuel quantity probes are there in an EC135 fuel system?
a)
4
b)
3
c)
2
15.
The two fuel supply tanks are _______________
a)
totally separated from each other
b)
are connected with overflow channels
c)
partly separated with a fuselage mounted fence
16.
There are _______ fuel pumps in the EC135's fuel system. __________ in the main tank and ___________ in supply tanks each.
a)
four - two - one
b)
three - one - two
c)
four - two - two
17.
Each XFER pump supplies fuel to ___________
a)
one of the supply tanks
b)
both supply tanks
c)
one engine
18.
Fuel pumps located in supply tanks are called:
a)
SPLY pumps
b)
PRIME pumps
c)
XFER pumps
19.
The FUEL Caution is triggerred when:
a)
amount of fuel sensed by fuel qty probes in supply tank(s) is low
b)
fuel level in the supply tank(s) drop below thermistor level
c)
total quantity of fuel is less than pre-determined value
20.
The LOW FUEL Warning is triggerred by:
a)
amount of fuel sensed by fuel qty probes in supply tank(s) is low
b)
fuel level in the supply tank(s) drop below thermistor level
c)
total quantity of fuel is less than pre-determined value
21.
When one of the fuel quantity probes in the main tank fails the CDS/CPDS indication is:
a)
F QTY FAIL
b)
F QTY DEGR
c)
F QTY INOP
22.
When one of the fuel quantity probes in the supply tank fails the CDS/CPDS indication is:
a)
F QTY FAIL
b)
F QTY DEGR
c)
F QTY INOP
23.
Fuel shut-off valves are:
a)
mechanical and electrical assemblies
b)
mechanicaL assemblies
c)
electrical assemblies
24.
The fuel expansion tank(s) _________________
a)
are located in LH and RH sides of the fuselage
b)
is located on the RH side of the fuselage
c)
is aluminium tank protected from impact damage with polyethylene shield
25.
Arrius 2B engine accessories are driven by
a)
N2 geartrain
b)
N1 geartrain
c)
reduction geartrain
26.
Arrius 2B Engine power output is driven
a)
N1 geartrain
b)
reduction geartrain
c)
accessory geartrain
27.
Arrius 2B engine reduction gears are made of:
a)
steel
b)
titanium
c)
nickel alloy
28.
Engine switches are located____________
a)
in the overhead panel
b)
on collective switch
c)
on the instrument panel/central pedestal
29.
Engines' FADECs ________________
a)
are completely isolated from each other
b)
are crosstalking
c)
are only connected with a BUS TIE switch
30.
Arrius 2B engine reduction gearbox is made of:
a)
steel
b)
titanium
c)
light alloy
31.
Arrius 2B engine principally consists of _______________ modules
a)
1
b)
3
c)
2
32.
Training mode is available for:
a)
T1/P1 models
b)
T3/P3 models
c)
T2/P2 models and higher
33.
Arrius 2B engine gas generator and free turbine are ____________ coupled
a)
mechanically
b)
gas
c)
electrically
34.
Overspeed protection of EC135's engines __________________
a)
is only available for TM engines
b)
works the same on TM and PW engines
c)
works differently for PW and TM engines
35.
Fuel return lines returning fuel from fuel nozzles/manifolds
a)
are installed at all helicopters
b)
are only installed at T models
c)
are only installed at P models
36.
Arrius 2B engine compressor and compressor turbine are connected through
a)
curvic coupling
b)
gas coupling
c)
electrical coupling
37.
Arrius 2B engine mounted firewalls are made of:
a)
stainless steel
b)
nickel alloy
c)
unobtanium
38.
Engine removable firewalls are made of
a)
stainless steel
b)
nickel alloy
c)
titanium
39.
MO1 of the Arrius 2B engine is:
a)
reduction gearbox
b)
gas generator
c)
power turbine
40.
MO2 of the Arrius 2B engine is:
a)
Gas generator and power turbine
b)
reduction gearbox
c)
N1 geartrain
41.
Engines are installed to the airframe through
a)
3 mounts
b)
2 mounts
c)
4 mounts
42.
Only the _________________ engine mount is adjustable
a)
rear
b)
inboard
c)
outboard
43.
Gas generator is part of the Arrius 2B _________
a)
MO1
b)
MO2
c)
gas generator module
44.
Power turbine of the Arrius 2B engine is part of the _____________
a)
MO1
b)
MO2
c)
gas generator module
45.
Engine position does not need to be (re)adjusted __________________________
a)
anytime the same engine is removed and re-installed
b)
anytime new engine is installed
c)
anytime new rear strut is installed
46.
The Arrius 2B combustion chamber is a ________________ type
a)
direct flow
b)
multi-tubular
c)
reverse flow
47.
Engines used on an EC135T models are
a)
PW206
b)
TM Arriel 2A
c)
TM Arrius 2B
48.
Arrius 2B turbine gasses temperature is measured
a)
at the HP turbine inlet
b)
between turbines
c)
at the power turbine outlet
49.
Engines used on an EC135P models are
a)
PW206
b)
TM Arriel 2A
c)
TM Arrius 2B
50.
EC135's engines are ________________ engines
a)
single-spool
b)
turboshaft
c)
jet
51.
The EC135/Arrius 2B FADEC is a ___________ unit
a)
analogue
b)
digital
c)
mechanical
52.
The EC135/Arrius 2B FADEC is a ___________ unit
a)
single channel
b)
double channel
c)
triple channel
53.
Arrius 2B engines: The P0 is _____________________________
a)
supplied to the FADEC by the aircraft pitot-static systém
b)
sensed by the FADEC by its own sensor
c)
supplied to the FADEC from the engine intake
54.
Arrius 2B N1 max speed limits are:
a)
defined by mechanical stop
b)
defined by max fuel flow capacity
c)
calculated by FADEC
55.
Arrius 2B N2 max speed limits are:
a)
defined by mechanical stop
b)
defined by max fuel flow capacity
c)
adjustable by potentiometer(s) (overhead panel)
56.
While in automatic mode, the Arrius 2B fuel flow is controlled
a)
by the twist grip
b)
by the FADEC
c)
by the collective lever position
57.
While in manual mode, the Arrius 2B fuel flow is controlled
a)
by the twist grip
b)
by the FADEC
c)
by the collective lever position
58.
In case of automatic mode failure af an Arrius 2B system, the transition to manual mode _________________
a)
must be initiated by the pilot
b)
is automatic
c)
will only be possible if confirmed by the pilot
59.
While in automatic mode the twist grip of an Arrius 2B system is moved out of its neutral position
a)
it will switch into manual mode
b)
it will remain in automatic mode
c)
it will enter a mixed mode
60.
When the Arrius 2B control system is in a mixed mode_______________
a)
FADEC is being overriden in full extent
b)
FADEC will compensate for twist grip movements in full range
c)
FADEC will compensate for twist grip movements as long as the stepper motor does not reach its stops
61.
A REDUND indication of Arrius 2B FADEC means:
a)
the system has failed and reverted to manual mode
b)
the system has encountered minor failure but essential control features are still available under back up law
c)
the system has encountered minor failure which is not affecting the primary control law
62.
A DEGRADE indication of Arrius 2B FADEC means:
a)
the system has failed and reverted to manual mode
b)
the system has encountered minor failure but essential control features are still available under back up law
c)
the system has encountered minor failure which is not affecting the primary control law
63.
How many fuel injectors are on an Arrius 2B engine?
a)
9
b)
2
c)
12
64.
How many main fuel injectors are on an Arrius 2B engine?
a)
9
b)
2
c)
12
65.
How many starting injectors are on an Arrius 2B engine?
a)
9
b)
2
c)
12
66.
Main fuel injectors of an Arrius 2B engine are vented __________________
a)
overboard
b)
back to the fuel tank
c)
into a drain tank
67.
If an optional fuel flowmeter is fitted to an Arrius 2B engine, it is located ____________
a)
between HP fuel pump and metering needle
b)
between the HMU and fuel valve assembly
c)
between LP fuel pump and HP fuel pump
68.
Arrius 2B constant delta P valve function is ______________
a)
to keep the fuel pressure across the metering needle constant
b)
to keep the fuel flow across the metering needle constant
c)
to keep the fuel pressure at the HP fuel pump outlet constant
69.
The Arrius 2B start-electro valve _________________
a)
opens/closes fuel to preference injectors
b)
opens/closes fuel to all injectors
c)
opens/closes fuel to starting injectors
70.
The Arrius 2B stop-electro valve _________________
a)
opens/closes fuel to preference injectors
b)
opens/closes fuel to all injectors
c)
opens/closes fuel to starting injectors
71.
The excess fuel from the Arrius 2B metering needle is directed to:
a)
the fuel tank
b)
the LP fuel pump outlet
c)
exhaust and is burned
72.
The Arrius 2B LP fuel pump is _____________________
a)
plunger pump
b)
gear type
c)
centrifugal
73.
During the initial starting phase of an Arrius 2B engine the fuel valve assembly pressurising valve is:
a)
open
b)
- - -
c)
closed
74.
During rapid deceleration of an Arrius 2B engine, the fuel is supplied to ___________
a)
start injectors only
b)
main injectors only
c)
preferred injector only
75.
There are _______ igniter plugs on each EC135 engine
a)
3
b)
2
c)
1
76.
Ignition system stops producing sparks after attaining ________ speed
a)
50%N1
b)
50%N2
c)
75%N1
77.
Ignition is fully controlled by ____________
a)
HMU
b)
FADEC
c)
Valve assembly
78.
Ignition is activated_________________
a)
when the Ignition switch is moved to position AUTO
b)
when the Ignition switch is moved to position EMER
c)
automatically by the FADEC
79.
The _________________ is used for pressurizing labyrinth seals of an Arrius 2B engine
a)
P2,5 air
b)
P3 air
c)
P 4,5 air
80.
The _________________ is used for fuel flow control of an Arrius 2B engine
a)
P2,5 air
b)
P3 air
c)
P 4,5 air
81.
The _________________ is measured and supplied to the EECU of an Arrius 2B engine
a)
T0
b)
T3
c)
T1
82.
The _________________is used for ventilation of fuel injectors
a)
P2,5 air
b)
P3 air
c)
P0 air
83.
The Arrius 2B fuel flow is metered by:y
a)
Hydromechanical unit
b)
Purge valve assembly
c)
Fuel valve assembly
84.
The engine(s) of EC135 are controlled primarilly ____________
a)
by a FADEC
b)
Manually
c)
Mechanically
85.
The Arrius 2B overspeed protection system ____________ when overspeed is detected
a)
reduces fuel flow automatically
b)
shuts the engine down automatically
c)
switches over to manualcontrol automatically
86.
The Arrius 2B overspeed protection system _____________ to avoid inadvertent shudow of the engine
a)
is inhibited while below 50% N1 speed
b)
is inhibited as a function of N1 speed
c)
is inhibited on the second engine in case it has been engaged/activated on the other engine
87.
When a FADEC fails _____________________
a)
manual override is always possible
b)
autorotation is neccessary
c)
affected engine will be automatically shut down
88.
The fuel distribution to individual Arrius 2B fuel injectors is controlled by:
a)
EECU
b)
HMU
c)
Valve assembly
89.
The fuel from the Arrius 2B purge valve assembly is directed:
a)
to fuel tank
b)
to low pressure fuel pump inlet
c)
overboard/to atmosphere
90.
"Droop compensation" is made possible with
a)
mechanical linkage of collective lever to HMU
b)
mechanical linkage of cyclic stick to HMU
c)
electronic signals from LVDT to FADEC
91.
The fuel ventilated from starting injectors on an Arrius 2B engine is directed:
a)
to fuel tank
b)
to low pressure fuel pump inlet
c)
overboard/to atmosphere
92.
There is(are) ____________ LVDT(s) installed in the EC135 control system
a)
1
b)
2
c)
3
93.
How many dedicated N1 sensors are on an Arrius 2B engine?
a)
3
b)
2
c)
1
94.
FADEC faults are indicated on
a)
CAD
b)
VEMD
c)
Warning panel
95.
Speed and torque indicators of an Arrius 2B engine are based on ___________ principle
a)
phonic wheel (mag. Pick-up)
b)
deflection derivation
c)
deflection integration
96.
FADEC FAIL is indicated on
a)
CAD
b)
VEMD
c)
Warning panel
97.
How many TQ sensoers are there on an Arrius 2B engine?
a)
3
b)
2
c)
1
98.
FADEC FAIL is indicated when
a)
PMA supplied power to FADEC is lost
b)
Aircraft electrical network ceases to supply FADEC with electrical power
c)
there is a total or critical failure in the automatic engine control systém
99.
Which Arrius 2B N1 signal is routed to the indicator directly?
a)
Signal from PMA
b)
N1B
c)
N1C
100.
TWIST GRIP indication is shown ___________________
a)
in manual mode only
b)
anytime the twist grip is moved off of its neutral position
c)
in training mode only
101.
The Arrius 2B exhaust pipe is supplied by:
a)
Engine manufacturer
b)
Airframe manufacturer
c)
Operator
102.
The Arrius 2B exhaust extension is supplied by:
a)
Engine manufacturer
b)
Airframe manufacturer
c)
Operator
103.
The gap between the exhaust pipe and the exhaust extension of the Arrius 2B engine utilises ____________ for venting the engine compartment
a)
Hall effect
b)
Coanda effect
c)
Venturi effect
104.
The Venturi effect between the Arrius 2B exhaust pipe and exhaust extension is used to _________________
a)
pressurize the engine compartment
b)
ventilate the starting injectors
c)
venting the engine compartment
105.
The Arrius 2B oil system is a __________ system
a)
dry sump
b)
wet sump
c)
non-vented
106.
The EC135's oil cooling systems is shared by
a)
MGB, TGB and engines
b)
MGB and engines
c)
both engines only
107.
The Arrius 2B oil tank is _______________
a)
external to the engine
b)
same as the MGB oil tank
c)
integral part of the engine's reduction gearbox
108.
The Arrius 2B oil system includes ________ electrical magnetic plugs
a)
3
b)
2
c)
1
109.
The EC135's oil system cooling fans are driven by ___________
a)
MGB drivetrain
b)
electrically
c)
accessory gearbox drivetrain
110.
The Arrius 2B pump-filter block houses _______pressure pump(s) and ___________ scavenge pump(s)
a)
1;2
b)
2;1
c)
3; 1
111.
The oil/fuel heat exchanger _____________ on some Arrius 2B variants
a)
is always fitted
b)
may optionally be fitted
c)
utilises only one shared oil/fuel filter element
112.
There is/are ________ thermal control bypass valve in each engine's oil cooling system
a)
2
b)
1
c)
no
113.
When the OIL FILTER indication of the Arrius 2B engine is triggered:
a)
The oil filter is always 100% clogged
b)
the oil filter visual indicator will always pop out and the filter is bypassed
c)
the oil filter element is partially clogged, but needs not to be neccessarily bypassed
114.
The Arrius 2B oil filter visual indicator _______________
a)
is equipped with a thermal lock preventing it from poping-out when the oil is too cold and thick
b)
has no thermal lock
c)
is equipped with a thermal lock preventing it from poping-out when the oil is too hot and thin
115.
For optimizing cold starts, engine oil cooling system's thermal bypass valve is _______ as long as oil temperature is below 85 centigrades
a)
closed
b)
electrically heated
c)
open
116.
The Arrius 2B oil pressure and temperature information ___________________
a)
is transmitted by one combined triple sensor which also acts as a low oil pressure switch
b)
is transmitted with 2 separate sensors/transmitters
c)
is sensed and transmitted by one combined oil pressure and temperature sensor
117.
Engine starting is controlled:
a)
manually
b)
automatically - FADEC
c)
mechanically - HMU
118.
During starting, the starter is cut-off and switched over to GEN mode _______
a)
after the engine N1 speed reaches 50%
b)
after the engine N1 speed reaches self-sustaining speed of 60%
c)
after the N2 speed reaches 50%
119.
Starting both engines at the same time ________
a)
is standard procedure
b)
is possible
c)
is not possible
120.
During Quick Start procedure _____________________
a)
both engines start simultaneously
b)
one engine starts and the second is being started only after the firs engine reaches 50% N1 speed
c)
one engine starts and the second is being started only after the first engine reaches 75% N1 speed
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