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ELECTRICAL SYSTEM Flashcards

(37 cards)

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1
Q
  1. In normal configuration, how is the DC ESS BUS supplied?
    a. from TR 1
    b. from ESS TR
    c. from TR 2
    d. from BAT 2
A

a. from TR 1

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2
Q
  1. AC ESS BUS is normally supplied by:
    a. AC BUS 1
    b. AC BUS 2
    c. Emergency Generator
    d. Static Inverter
A

a. AC BUS 1

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3
Q
  1. DC BAT BUS can be supplied by:
    a. DC BUS 1 on Batteries
    b. DC BUS 1, DC BUS 2 or Batteries
    c. DC BUS 2 or Batteries
A

b. DC BUS 1, DC BUS 2 or Batteries

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4
Q
  1. What happens during the EMER GEN Test?
    a. The RAM Air Turbine (RAT) is extended;

b. The Blue System is pressurized and the Emergency Generator comes on
Line;

c. The Green System is pressurized and the Emergency Generator comes on
Line, supplied by HOT BUS 2.

A

b. The Blue System is pressurized and the Emergency Generator comes on
Line;

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5
Q
  1. On the EMER ELEC PWR Panel, a fault light illuminates under the “RAT and EMER GEN” Label. What does it mean?
    a. RAT is not extended;
    b. Emergency Generator is not supplying when AC BUS 1 and 2 are not powered (above 100 kts) or DC BAT BUS is not powered;
    c. Emergency Generator is supplying but AC ESS BUS is not powered;
    d. Emergency Generator is not supplying when AC BUS 1 and 2 are not powered and the gear is retracted (Nose L/G is UP).
A

d. Emergency Generator is not supplying when AC BUS 1 and 2 are not powered and the gear is retracted (Nose L/G is UP).

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6
Q
  1. What happens when the GEN1 Line push button is set to OFF?

a. AC BUS 1 and 2 are not powered and EMERgency GENerator is
automatically connected;

b. AC BUS 1 is powered by GEN 2 because GEN 1 is deactivated;
c. AC BUS 1 is powered by GEN 2 because GEN 1 Line Contactor is opened;

d. AC BUS 1 is not powered because GEN 1 Line Contactor is opened and the
Transfer Contactor is not closed.

A

c. AC BUS 1 is powered by GEN 2 because GEN 1 Line Contactor is opened;

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7
Q
  1. In cold aircraft configuration (No AC and No DC Supply), where can the Batteries Voltage be checked?
    a. On the ECAM ELEC Page
    b. On the ELEC Overhead Panel
    c. There is no indication
A

b. On the ELEC Overhead Panel

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8
Q
  1. What happens during the EMER GEN Test?
    a. The EMERgency GENerator comes on line, supplied by HOT BUS 2, and the Hydraulic Green System is pressurized;
    b. The RAM Air Turbine (RAT) is extended;
    c. As the Blue System is already pressurized, the EMERgency GENerator comes on line.
A

c. As the Blue System is already pressurized, the EMERgency GENerator comes on line.

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9
Q
  1. BUS TIE Contactors when closed enable AC BUS 1 and 2:
    a. To be supplied by any one of the main generators or external power;
    b. To be supplied by APU GENerator or External Power only;
    c. To be connected in parallel.
A

a. To be supplied by any one of the main generators or external power;

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10
Q
  1. In flight, on Batteries only, the AC ESS SHED BUS and the DC ESS SHED BUS are lost.
    a. Yes
    b. No
A

a. Yes

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11
Q
  1. The Static Inverter works:
    a. Always;
    b. When A/C is in flight and on Batteries ONLY;
    c. When one Main Generator fails.
A

b. When A/C is in flight and on Batteries ONLY;

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12
Q
  1. Recommended Minimum Battery Voltage before APU Start is:
    a. 25 V
    b. 27.5 V
    c. 22 V
    d. No Minimum
A

a. 25 V

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13
Q
  1. On ground, what happens if the “RAT and EMER GEN MAN ON PUSH BUTTON” is pressed in:
    a. The RAT is extended;
    b. The EMERgency GENerator is activated;
    c. Nothing
A

a. The RAT is extended;

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14
Q
  1. On the EMER ELEC PWR Panel, if the FAULT Light comes ON under the “RAT and EMER GEN” Label, what does it mean?
    a. EMERgency GENerator is supplying but AC ESS BUS is not powered;

b. EMERgency GENerator is not supplying when AC
BUS 1 and 2 are not powered and the Landing Gear is retracted (Nose L/G is UP);

c. RAT is not extended;
d. EMERgency GENerator is not supplying when AC BUS 1 and 2 are not powered (above 100 kts) or DC BAT BUS is not powered.

A

b. EMERgency GENerator is not supplying when AC

BUS 1 and 2 are not powered and the Landing Gear is retracted (Nose L/G is UP);

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15
Q
  1. The Static Inverter transforms the DC Voltage from the Battery BUS into:
    a. SINGLE PHASE 115 V // 400 HZ AC CURRENT
    b. THREE PHASE 115/200 V // 400 HZ AC CURRENT
A

a. SINGLE PHASE 115 V // 400 HZ AC CURRENT

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16
Q
  1. In flight, in case of loss of All Main Generators, EMERgency GENerator not running, the STATIC INVERTER supplies:
    a. APU and ENG START + AC ESS BUS
    b. ENG START + AC ESS BUS + AC ESS SHED BUS
    c. ENG START
Study These Flashcards
A

a. APU and ENG START + AC ESS BUS

17
Q
  1. The External Power has priority over the APU GEN.
    a. Yes
    b. No
18
Q
  1. GEN 1 and GEN 2, when operating, have priority over APU GEN.
    a. Yes
    b. No
19
Q
  1. With APU available, if one Eng Generator fails, the failed generator is replaced by:
    a. the APU
    b. the other Eng Generator
20
Q
  1. In case of TR failure (TR2), does the ESS TR supply the DC ESS BUS?
    a. Yes
    b. No
21
Q
  1. In flight, in case of loss of All Generators, EMERgency GENerator not running, the DC ESS BUS is supplied by:
    a. HOT BUS 2
    b. ESS TR
    c. BOTH
22
Q
  1. In flight, in case of loss of All Main Generators, EMERgency GENerator running, the DC ESS BUS is supplied by:
    a. HOT BUS 2
    b. ESS TR
    c. BOTH
23
Q
  1. The IDG regulates the:
    a. SPEED
    b. VOLTAGE
    c. FREQUENCY OF THE GENERATOR
24
Q
  1. Generators are sometimes connected in parallel:
    a. Yes
    b. No
25
25. What happens in case of Total Loss of Main Generators? a. The RAT is automatically extended and powers the Yellow Hydraulic System which drives the EMERgency GEN (provided Nose L/G is UP); b. The RAT is extended and mechanically connected to the EMERgency GENerator; c. The RAT is automatically extended and powers the Blue Hydraulic System which drives the EMERgency GENerator (provided Nose L/G is UP); d. The RAT has to be manually extended.
c. The RAT is automatically extended and powers the Blue Hydraulic System which drives the EMERgency GENerator (provided Nose L/G is UP);
26
26. If AC BUS 1 fails, the AC ESS BUS is supplied by: a. EMER GEN b. AC BUS 2 c. STATIC INVERTER
b. AC BUS 2
27
27. In case of Total Electrical Loss, the AC ESS BUS is supplied by: a. STATIC INVERTER b. EMER GEN c. BOTH
a. STATIC INVERTER
28
28. In Emergency Configuration, AC ESS SHED BUS is automatically: a. Shed with L/G Down; b. Supplied by Static Inverter when L/G is Down.
a. Shed with L/G Down;
29
29. With only One Generator operating in flight: a. Main Galley is automatically shed; b. Secondary Galley is automatically shed; c. All Galleys are shed.
a. Main Galley is automatically shed;
30
30. When disconnecting the IDG, the Pushbutton Switch should be pressed: a. For no more than 3 seconds; b. For no more than 5 seconds; c. For no longer than 3 seconds; d. Until the FAULT Light goes out.
a. For no more than 3 seconds;
31
31. Can you reconnect the IDG in flight? a. Yes b. No
b. No
32
32 When GEN 1 or GEN 2 is selected OFF: a. The GEN is de-energized and the Line Contactor is open; b. The GEN is still energized and the Line Contactor is open.
a. The GEN is de-energized and the Line Contactor is open;
33
33. The GREEN EXT PWRN Push Button AVAIL Light is ON, what does it mean? a. The EXT POWR is plugged in; b. The A/C network is supplied.
a. The EXT POWR is plugged in;
34
34. When do the Batteries supply the DC BAT BUS? a. APU Starting b. Loss of AC BUS 1 c. Loss of AC BUS 1 + 2 (Speed < 100 KTS) d. A + C
d. A + C
35
35. When you want to check Battery Voltage, you must set the BAT Pushbutton to: a. AUTO Position b. OFF Position
b. OFF Position
36
36. The BAT FAULT Light comes on when: a. Battery Voltage < 25 b. Battery Push Button is set to OFF in flight c. Charging current increases at an abnormal rate
c. Charging current increases at an abnormal rate
37
37. In certain cases, the Static Inverter is supplied by: a. HOT BUS 1 and HOT BUS 2 b. HOT BUS 1 c. DC BAT BUS
b. HOT BUS 1
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