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CRJ 700/900Electrical > Systems Questions > Flashcards

Systems Questions Flashcards

0
Q

The APU is located in the…

A

Aircraft tailcone

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1
Q

Maximum APU start altitude?

A

37,000 feet

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2
Q

What is the bleed air source for the CRJ 900 air conditioning system

A

6th and 10th stages

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3
Q

How is the air conditioning pack pressure controlled on the CRJ 900 when the engines are supplying bleed air?

A

Pack valves

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4
Q

Selecting the RAM AIR switch OPEN supplies ram air to?

A

Mixing manifold

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5
Q

What is the STDBY selection on the DISPLAY FAN control panel provide on the CRJ 900?

A

De-energizes the flight and ground fans

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6
Q

How is the outflow valve operated?

A

Electrically

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7
Q

How is the avionics bay exhaust air controlled on the CRJ 900?

A

Ground valve

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8
Q

How many outflow valves are installed on the CRJ 900?

A

1

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9
Q

At FL 410 the engine driven generators are rated at?

A

40 kVA

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10
Q

CRJ 900 TRU distribution system consists of…

A

4 TRUs rated at 120 amps each

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11
Q

The DC tie connectors are controlled…

A

automatically

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12
Q

During single generator operations the following bus(es) are load shed

A

No buses are load shed

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13
Q

How many circuit breaker panels are located on the flight deck?

A

2

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14
Q

From the list below identify the aircraft systems not protected by a dual loop fire/overheat.

A

Cargo, it is protected be smoke detectors.

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15
Q

The engine low-pressure turbine…( fire protection)

A

Is protected by overheat detection system only

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16
Q

How is the fire detection and extinguishing (FIREX) system tested?

A

Pilot selected

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17
Q

Flutter dampeners are provided on

A

Ailerons only

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18
Q

Maximum 45 slats/flaps VFE speed is…

A

170 kts

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19
Q

The MFS are powered by how many hydraulic systems?

A

1 on each side by one system.(Messed up question but the final answer is one)

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20
Q

Lift dumping is accomplished by extending…

A

2 MFS panels per wing, 2 ground spoilers per wing; total eight

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21
Q

There are two slat positions. The intermediate position of 20° is set when the

A

SLATS/FLAPS lever is selected to 1 and 8

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22
Q

When the EMER FLAP switch is selected the…

A

Slats/flaps move to 25/20

23
Q

The RTL restricts rudder travel…

A

In flight only

24
Q

The standby ISI is…

A

An integrated standby instrument

25
Q

The enhanced flight director provides optimized pitch reference…

A

When the TO mode is active

26
Q

When the aircraft is pressure refueled the total usable capacity of the CRJ 900 is…

A

19,594 lbs

27
Q

The APU fuel feed system use a…

A

Dedicated APU fuel pump

28
Q

The APU on the CRJ 900 gets fuel from…

A

The left wing tank via the left collector tank

29
Q

The bulk fuel temperature for the CRJ 900 is measured in the…

A

Right wing tank

30
Q

The purpose of the HYD SOV switch light is…

A

Stop the flow of hydraulic fluid to EDP 1A or 2A

31
Q

What is the source of the bleed air used for anti-icing?

A

6th or 10th stage bleed air

32
Q

What does the DET TEST switch test when pressed?

A

Ice detectors, air data probes and sensor heaters
“ADS heat test okay” message will be displayed on that EICAS
Message will change from yellow to green

33
Q

How is a cowl leak detected?

A

Pressure transducer

34
Q

The maximum landing gear retraction and extension speeds for the CRJ 900 are…

A

200 KIAS & 220 KIAS

35
Q

The forward nose gear doors…

A

Remain open when the nose gear is extended

36
Q

Bleed air is taken from which stages of the engine compressor?

A

6th or 10th stages

37
Q

How is the bleed source selection control when in the AUTO mode?

A

Automatically by the ACSC

38
Q

How is the interlock protection provided for the APU?

A

ACSC control logic provides two levels of protection

39
Q

What is the purpose of the HPV?

A

To provide high-pressure 10th stage air as required

40
Q

On the ground with both engines running and the APU operating what bleed air source is supplying the manifold?

A

APU

The ACSC logic always chooses the APU when its running to avoid having engines and APU pushing air into the manifold.

41
Q

When is the bleed leak detection system monitored?

A

Continuously when powered

42
Q

CF34–8C5 takeoff and APR thrust values are_____&_______ft lbs.

A

13,560 and 14,750

43
Q

Engine N1 speed governing is a function of…

A

FADEC

44
Q

N1 & N2 synchronization is available during…

A

Cruise

45
Q

FLEX N1 Is computed by…

A

FMS computer

46
Q

Prior to takeoff Normal rated takeoff N1 thrust is displayed…

A

Automatically

47
Q

The CF34-8C5 thrust reverser system is operated by…

A

Hydraulic pressure

48
Q

The automatic power reserve system (APR) is armed when…

A

When the engine speed is within 8% N1 RPM scheduled takeoff power

49
Q

FADEC will automatically abort an engine starts for all malfunctions detected.

A

False

50
Q

Engine oil quantity monitoring and servicing is…

A

Via the EICAS MENU page and oil replenishment system in the aft equipment bay.

51
Q

When an engine failure is detected, APR thrust occurs when…

A

A. Thrust levers are in TOGA detent.

B. Normal, FLEX, or Go-Around power is programmed.

52
Q

The CRJ 900 thrust Lever quadrant is equipped with detents of…

A

MAX POWER, TOGA, CLIMB, IDLE, SHUT OFF

53
Q

How many hydraulic pumps are needed to operate each spoiler?

A

1

54
Q

What message do you get after pressing the DET Test button?

A

ADS HEAT TEST OK

55
Q

CRJ 700/900 Aircraft uses what electrical power?

A

115 volt AC and 28 volt DC electrical power.

56
Q

How many electric motors control the out flow valve?

A

3

CRJ 700/900Electrical (21 decks)

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