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The Start Power Unit (SPU). Changes 115Vac to 28Vdc. Changes 28Vdc to 115Vac. Changes 28Vdc to 235Vac.

On the GND with ENG’s OFF, when you push the SYS sw on a DSP the dafault page is: STATUS. ELEC. ENG.

The common core system (CCS) provides: Improved reliability, increased cost and weight. Improved reliability, decreased cost and weight. Decreased reliability, decreased cost and weight.

Where is the electrical fligth bag (EFB) software and data stored?. In the file server module (FSM). In a hard drive inside the EFB electronic unit (EU). In the General Processor Module (GPM).

How many display show data if one graphics generator fails?. Four displays show data (three HDD and one HUD). Six displays show data (five HDD and one HUD). Seven displays show data (five HDD and two HUD).

How many graphics generator (GG) does the primary display system (PDS) have?. Two Graphics Generator. Six Graphics Generator. Four Graphics Generator.

If one power conditioning module (PCM) fails. The other PCM continues to supply to all CCR cabinet module. Both PCMs stop supplying power to the CCR cabinet module. The other PCM supplies power only to the cooling fans.

What component change 235Vac or 115Vac to +/- 270?. GCUs. ATRUs. GATUs.

What are the components of the CDN?. The GPMs, the PCMs and the HUDs. The ACSs, the FOXs, the ARSs and associated fiber optic cables and coppper wire interface. The RDCs, the BPCUs and the GCUs.

How many displays does the primary displays system (PDS) have?. Five head down displays (HDD) and one head up display (HUD). Five head down displays (HDD) and two head up displays (HUD). Four head down displays (HDD) and two head up displays (HUD).

Each comen computing resource (CCR) contains: Two ACSs, two FOXs, eight GPMs, two PCMs. Four ACSs, two FOXs, four GPMs, two PCMs. Two ACSs, four FOXs, eight GPMs, four PCMs.

In primary displays system, HUD projector is cooled by: Air/Oil Heat Exchanger. Internal Fan. External liquid cooling system.

What is the onboard data load function (ODLF) purpose?. It monitors and controls electronic circuit breakers. It loads loadable software airplane parts (LSAPs) from the file server module (FSM) to airplane. It provides electrical power to the airplane displays.

At initial power-up, where is the EICAS displayed?. On the outboard side of the captain’s outboard HDD. On the inboard side of the captain’s inboard HDD. On the first officer’s HUD.

Who controls the LOAD MANAGEMENT function?. The Generator Control Units (GCUs). The Remote Data Concentrators (RDCs). The Bus Power Control Units (BPCUs).

How is the Variable Frequency Starter Generator (VFSG) cooled down?. By an Internal Fan. By a fuel/oil heat exchanger. By an Air/Oil Heat Exchanger (AOHE).

17.- The CCS has: Two CCRs, Six ARSs and Twety-One RDC. Four CCRs, Six ARSs and Twety-One RDC. Two Four ARSs and Twelve RDC.

What is the purpose of the FOX modules?. Changes electrical signals to hydraulic signals and visa versa. Changes light signals to electrical signals and visa versa. Changes electrical power to optical power only.

The GATU transform: 235Vac to 115 Vac. 115Vac to 28Vdc. 235Vac to +/- 270Vdc.

In which common core system (CCS) components are the hosted software applications for airplanes systems stored?. Power Conditioning Modules (PCM). General Processor Modules (GPM). Remote Data Concentrators (RDC).

Electronic Flight Bag is used to: Replaced some paper material (MEL, QRH, etc). Control the airplane generator output voltage. Monitor and control electronic circuit breakers.

The E-BPSU changes: 115Vac to 28Vdc. 28Vdc to +/- 130Vdc. 235Vac to +/- 270Vdc.

What component control related generator output voltaje?. The BPCUs. The GCUs. The ATRUs.

How does the CCS send and receive airplane data?. Through the Current Return Network (CRN). Through a common data network (CDN). Through the electrical flight bag (EFB).

What is the function of the recorder independent power supply (RIPS)?. Is to give power to the forward flight recorder for 10min. when aircraft power is not available. Is to give power to all cockpit displays for 10min. when aircraft power is not available. Is to give power to the APU battery for 10min. when aircraft power is not available.

The Graphics Generator (GG) has: Four outputs buses, but only two buses can be active at a time. Six outputs buses, but only two buses can be active at a time. Eight outputs buses, but only four buses can be active at a time.

What components does the Head Up Displays (HUD) have?. Projector and Combiner. Graphics Generator and Combiner. Projector and General Processor Module.

To perfom maintenance task and tests in the airplane, the system that is used is: ODLF (Onboard Data Load Function). CMCF (Central Maintenance Computing Function). OSMF (Onboard Storage Management Function).

What is the function of CBIC?. Monitor and control electronic circuit breakers. Monitor and control hydraulic circuit breakers. Monitor and control generator output voltage.

How many copies of DCAF software are there on the B787?. There are 2 copies of the DCAF software. There are 4 copies of the DCAF software. There are 6 copies of the DCAF software.

Current Return Network (CRN) provides: Return path for normal and fault AC and DC current. A path for normal AC current only. A path for normal DC current only.

How is APU Battery Chargeg?. By a Battery Charger supplid from the CAPT INSTR BUS. By a Battery Charger supplid from the F/O INSTR BUS. By the GCUs directly from the generator.

What is the Remote Data Concentrator main purpose?. The RDC main purpose is to change airplane system data from ANALOG, DISCRETE, ARINC 429, CAN BUS DATA to ARINC 664 format. The RDC main purpose is to change airplane system data from ARINC 664 to 115Vac format. The RDC main purpose is to change airplane system data from ANALOG and DISCRETE to hydraulic signals.

What is the function of the ENG switch on the EFIS/DSP?. To show or remove primary flight data from the PFD. To show or remove secondary engine data from EICAS. To show or remove electrical system data from the STATUS page.

How can you connect the maintenance laptop (ML) to the airplane?. Wire Ethernet connection or Wireless network. Only through a USB connection. Only through a serial cable connection.

What is the purpose of the 2 nose gear pressure transducers informations?. The DCAF uses the data to verify the calculated stabilize yelow green band position. The DCAF uses the data to verify the calculated stabilizer green band position. The DCAF uses the data to verify the calculated stabilizer white band position.

What is the Core Network Function that allows you to find and delete loadable software airplane part (LSAP) from the crew informations system - maintenance system (CIS/MS) file server module (FSM)?. The Onboard Data Load Function (ODLF). The Onboard Storage Management Function (OSMF). The Central Maintenance Computing Function (CMCF).

Which components is used to control the LH Aft External Power Contactor to open or close?. The L1 GCU. The L2 GCU. The R2 GCU.

The Power Conditioning Module (PCM) changes 28Vdc to: +28Vdc used by all modules in CCR and +21,5Vdc to cooling fan and control valve motor. +21,5Vdc used by all modules in CCR and +28Vdc to cooling fan and control valve motor. +115Vac used by all modules in CCR and +28Vdc to cooling fan and control valve motor.

How can the Airplane be in the virtual GROUND HANDLING MODE?. If forward external power is connected and selected ON, and no other electrical power is supplied. If forward external power is connected but not selected ON, and no other electrical power is supplied. If forward external power is not connected and the APU is supplying electrical power.