Email
info@vayudootaviation.com
Phone No
+91 7276526726
become a pilot
Home
About us
courses
CPL
ATPL
RTR(A)
Airline Cadet Program
IGRUA Entrance Prep
B.Sc. Aviation
Pilot Training
INDIA
USA
CANADA
SOUTH AFRICA
NEW ZEALAND
EUROPE
Aircraft Type-Rating
Airbus A320
Boeing 737
Blogs
contact
CPL Test Series
Question Bank
Questions for INDIGO SYSTEMS( 515-806)
Answer the following questions
Test Mode
Training Mode
1.
The ""cabin differential pressure"" is
approximately 15 psi at maximum
cabin pressure minus ambient pressure
the pressure differential between the air entering and leaving the cabin.
approximately 5 psi at maximum
2.
Internal leakage in a hydraulic system will cause
a decreased fluid temperature.
an increased fluid pressure
an increased fluid temperature
fluid loss
3.
The frequency of an AC generator is dependent upon the
field strength and the speed of the rotor.
number of pairs of poles and the speed of the rotor
number of individual poles only
number of individual poles and the field strength
4.
The function of an air cycle machine is to
cool the bleed air
remove the water from the bleed air.
decrease the pressure of the bleed air
pump the conditioned air into the cabin
5.
The cabin pressure is regulated by the
Air conditioning pack.
Air cycle machine
Cabin inlet airflow valve
Outflow valve
6.
The true statement among the following in relation to the application of Ohm's law is
power in the circuit is inversely proportional to the square of the current
Current in a circuit is directly proportional to the applied electromotive force
The current in a circuit is directly proportional to the resistance of the circuit.
current in a circuit is inversely proportional to the electromotive force.
7.
In a manually operated system, the cabin altitude rate of change is normally controlled by
a rate of change selector
the difference between the altitude selected on the cabin pressure controller and the aeroplane altitude
the difference between the barometric pressure selected on the cabin pressure controller and ambient barometric pressure
the duct relief valve when operating at the maximum cabin differential pressure
8.
On a transport type aircraft the fuel tank system is vented through
The return lines of the fuel pumps
Bleed air from the engines
A pressure regulator in the wing tip.
Ram air scoops on the underside of the wing.
9.
On most modern airliners the cabin pressure is controlled by regulating the
RPM of the engine
Airflow entering the cabin.
Airflow leaving the cabin.
Bleed air valve
10.
Batteries are rated in
Amperes/volts.
Watts.
Ohms.
Amperes.hours
11.
On board present aircraft, the batteries used are mainly Cadmium-Nickel. Their advantages are:1. low risk of thermal runaway2. high internal resistance, hence higher power3. good charging and discharging capability at high rating4. wider permissible temperature range5. good storage capability6. sturdiness owing to its metal casing7. the electrolyte density remains unchanged during charging.The combination of correct statement is
1, 2, 5, 6, 7
2, 3, 4, 5, 6
3, 4, 6, 7
3, 4, 5, 6
12.
Fuses are rated to a value by
the number of volts they will pass
the number of amperes they will carry
their resistance measured in ohms.
their wattage
13.
A CSD of an AC generator may be disconnected in flight. The primary reason(s) for disconnection are
illumination of the CSD disconnect warning light
excessive variation of voltage and kVAR
low oil pressure and/or high oil temperature of the generator drive
slight variation about the normal operating frequency
14.
The frequency of an AC generator is dependent on the
field strength and the speed of the moving part.
number of pairs of poles and the speed of the moving part
number of individual poles and the field strength
number of individual poles only
15.
When a landing gear wheel is hydroplaning, its friction factor is equal to
1
0.1
0.5
16.
An artificial feel unit is necessary in the pitch channel when
the elevators are actuated by reversible servo-control units.
the elevators are fitted with servo-tabs or trim tabs.
the elevators are actuated by irreversible servo-control units.
there is a trimmable stabilizer.
17.
A static inverter is a
device for reversing the polarity of the static charge
static discharger
filter against radio interference
transistorized unit used to convert DC into AC.
18.
The function of a fusible plug is to
function as a special circuit breaker in the electric system
protect the tyre against explosion due to excessive temperature.
protect against excessive pressure in the pneumatic system.
protect the brake against brake disk fusion due to excessive temperature
19.
The fuselage of an aircraft consists, among others, of stringers whose purpose is to
withstand the shear stresses
provide sound and thermal isolation
integrate the strains due to pressurization to which the skin is subjected and convert them into a tensile stress.
assist the skin in absorbing the longitudinal traction-compression stresses
20.
Hydraulic fluids of synthetic origin are
purple.
red.
blue.
pink.
21.
The advantages of thermal anti-icing are :1. Simple and reliable system2. Profiles maintained3. Greater efficiency than that of an electrical resistor4. Direct use of the hot air from the jet engine without substantial reduction in engine thrustThe combination of correct statements is
1,2
2,4
3,4
1,3
22.
The pneumatic ice protection system is mainly used for
wings.
pitot tubes
propellers.
engine intakes
23.
Cabin air for modern aircraft is usually taken from
the second fan stage
the low pressure compressor and from the high pressure compressor if necessary
the high pressure compressor
the low pressure compressor
24.
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
remain the same
increase by 10 %.
increase by 5 %.
decrease by 5 %.
25.
Concerning the sequential pneumatic impulses used in certain leading edge deicing devices, one can affirm that :1 - They prevent ice formation.2 - They are triggered from the flight deck after icing has become visible.3 - A cycle lasts more than ten seconds.4 - There are more than ten cycles per second.The combination which regroups all the correct statements is
04-Jan
c) 03-Jan
03-Fev
04-Fev
26.
The cross-feed fuel system enables
the supply of the jet engines mounted on a wing from any fuel tank within that wing.
the supply of the outboard jet engines from any outboard fuel tank.
only the transfer of fuel from the centre tank to the wing tanks.
the supply of any jet engine from any fuel tank.
27.
A feeder fault on a direct current circuit results from a flux unbalance between the
voltage coil and the series winding turn
generator and the series winding turn.
shunt exciter and the series winding turn.
voltage coil and the series winding
28.
A pneumatic de-ice system should be operated
When there are approximately 5 cm of ice on leading edges
When entering areas with icing conditions
Only at take-off and during approach.
When there is approximately 1,5 cm of ice on leading edges
29.
On an aircraft landing gear, an under-inflated tyre
will wear at the shoulders
it's tread will deteriorate faster
will be more subject to viscosity aquaplaning on dry runway
will have an increased critical hydroplanning speed
30.
The ABS (Auto Brake System) is being diconnected after landing
automatically
the system is always armed
at a certain low speed
by pilot action
31.
Real load sharing in a parallel AC system is achieved by
controlling the generator field current
carefully selecting the number of loads on the bus-bars at any one time
monitoring the kVAR of each generator/alternator
automatic adjustment of the torque on each generator rotor via the CSD unit
32.
Hydraulic fluids must have the following characteristics:1. thermal stability2. low emulsifying characteristics3. corrosion resistance4. good resistance to combustion5. high compressibility6. high volatility7. high viscosityThe combination regrouping all the correct statements is
2, 3, 4, 5
1, 3, 4, 6
1, 2, 3, 4
1, 2, 5, 7
33.
The pressurization of the cabin is controlled by
The cabin outflow valve.
The engine's RPM.
The cabin inlet airflow
The engine's bleed valves
34.
A current limiter fuse in a DC generation system is used to
instantaneously rupture to limit the current in the load
limit the current in the armature
limit the current in the field circuit
allow a short term overload before rupturing
35.
When the AC generators are connected in parallel, the reactive loads are balanced by means of the
torque of the Constant Speed Drive (CSD).
energizing current
voltage.
frequency.
36.
The low pressure switch of a hydraulic circuit sets off an alarm if
the reservoir level is at the normal operation limit
the pump power accumulator is deflated
the pump output pressure is insufficient
there is a leak in the reservoir return line.
37.
The main purpose of a Constant Speed Drive unit is to
take part in the balancing of reactive loads.
mechanically protect the alternator drive shaft during coupling
maintain a constant frequency
take part in the voltage regulation
38.
As regards three-phase AC generators, the following conditions must be met for paralleling AC generators:1. Equal voltage2. Equal current3. Equal frequencies4. Same phase rotation5. Voltages of same phaseThe combination regrouping all the correct statements is
1, 3, 5
1, 3, 4, 5
1, 4, 5
1, 2, 3, 4
39.
Shuttle valves will automatically
Shut down systems which are overloaded
Switch hydraulically operated units to the most appropriate pressure supply
Reduce pump loads
Guard systems against overpressure
40.
When a persistent overexcitation fault is detected on only one AC generator, the protection device opens the
exciter breaker, generator breaker and tie breaker
tie breaker
exciter breaker and generator breaker
generator breaker and tie breaker
41.
Hydraulic power is a function of
System pressure and volume flow.
Pump size and volume flow
Pump RPM only.
System pressure and tank capacity
42.
A thermal circuit breaker
protects the system in the event of overheating, even without exceeding the maximum permissible current
is a protection system with a quick break capacity of about one hundredth of a second.
can be reset without any danger even if the fault remains
forbids any overcurrent
43.
Hydraulic fluids used in systems of large modern airliners are
Mineral base fluids.
Water base fluids
Vegetable base fluids.
Phosphate ester base fluids
44.
A turbo-fan cold air unit will
cause a pressure drop as well as an associated temperature drop in the charge air
decrease charge air pressure whilst causing hte temperature to rise in the heat exchanger
increase charge air pressure whilst causing hte temperature to drop in the heat exchanger
not affect the charge air pressure
45.
The function of a feed box in the fuel tank is to
ventilate the tank during refuelling under high pressure
distribute the fuel to the various tanks during refuelling
increase the fuel level at the boost pump location
trap fuel sediments or sludge in the lower part of the tank
46.
The ice protection for propellers of modern turboprop aeroplanes works
electrically.
with anti-icing fluid.
pneumatically.
with hot air.
47.
The speed of an asynchronous four-pole motor fed at a frequency of 400 Hertz is
1600 revolutions per minute
12000 revolutions per minute
6000 revolutions per minute
800 revolutions per minute
48.
The water separator of an air-conditioning unit is located at the cooling unit
inlet and uses a centrifugal process
outlet and uses an evaporation process
outlet and uses a centrifugal process.
inlet and uses an evaporation process
49.
The ice protection system currently used for the most modern jet aeroplanes is the
Hot air system
Pneumatic system with expandable boots
Liquid de-icing system
Electrical de-icing system
50.
The purpose of the baffles in an aircraft's integral fuel tank is to
Restrict the fuel from flowing to the wing tips during abnormal manoeuvre (side slipping...).
Prevent mixture of the fuel and hydraulic fluid
Prevent the fuel from flowing in the vent lines
Prevent overpressure in the tank.
Submit
Make New Set
